| hyperextension | (noun) greater than normal extension | - |
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| hypertension | (noun) a common disorder in which blood pressure remains abnormally high (a reading of 140/90 mm Hg or greater) | Synonyms: high blood pressure |
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| hypotension | (noun) abnormally low blood pressure | - |
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| illusion | (noun) the act of deluding; deception by creating illusory ideas | Synonyms: delusion, head game |
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| (noun) an illusory feat; considered magical by naive observers | Synonyms: conjuration, conjuring trick, deception, legerdemain, magic, magic trick, thaumaturgy, trick |
| (noun) something many people believe that is false | Synonyms: fancy, fantasy, phantasy |
| (noun) an erroneous mental representation | Synonyms: semblance |
| illusionist | (noun) a person with unusual powers of foresight | Synonyms: seer, visionary |
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| (noun) someone who performs magic tricks to amuse an audience | Synonyms: conjurer, conjuror, magician, prestidigitator |
| immersion | (noun) a form of baptism in which part or all of a person's body is submerged | - |
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| (noun) the act of wetting something by submerging it | Synonyms: dousing, ducking, submersion |
| (noun) complete attention; intense mental effort | Synonyms: absorption, concentration, engrossment |
| (noun) sinking until covered completely with water | Synonyms: submergence, submerging, submersion |
| (noun) (astronomy) the disappearance of a celestial body prior to an eclipse | Synonyms: ingress |
| immunosuppression | (noun) lowering the body's normal immune response to invasion by foreign substances; can be deliberate (as in lowering the immune response to prevent rejection of a transplanted organ) or incidental (as a side effect of radiotherapy or chemotherapy for cancer) | - |
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| implosion | (noun) the initial occluded phase of a stop consonant | - |
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| (noun) a sudden inward collapse | - |
| imprecision | (noun) the quality of lacking precision | Synonyms: impreciseness |
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| impression | (noun) an impressionistic portrayal of a person | - |
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| (noun) the act of pressing one thing on or into the surface of another | - |
| (noun) (dentistry) an imprint of the teeth and gums in wax or plaster | - |
| (noun) an outward appearance | Synonyms: effect |
| (noun) a vague idea in which some confidence is placed | Synonyms: belief, feeling, notion, opinion |
| (noun) a clear and telling mental image | Synonyms: mental picture, picture |
| (noun) a symbol that is the result of printing or engraving | Synonyms: stamp |
| (noun) all the copies of a work printed at one time | Synonyms: printing |
| (noun) a concavity in a surface produced by pressing | Synonyms: depression, imprint |
| impressionist | (noun) an artist who follows the theories of Impressionism | - |
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| impulsion | (noun) the act of applying force suddenly | Synonyms: impetus, impulse |
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| (noun) a force that moves something along | Synonyms: drift, impetus |
| incision | (noun) the cutting of or into body tissues or organs (especially by a surgeon as part of an operation) | Synonyms: section, surgical incision |
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| (noun) a depression scratched or carved into a surface | Synonyms: dent, prick, scratch, slit |
| inclusion | (noun) the act of including | - |
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| (noun) any small intracellular body found within another (characteristic of certain diseases) | Synonyms: cellular inclusion, inclusion body |
| (noun) the relation of comprising something | Synonyms: comprehension |
| (noun) the state of being included | - |
| incomprehension | (noun) an inability to understand | - |
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| incursion | (noun) an attack that penetrates into enemy territory | Synonyms: penetration |
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| (noun) the act of entering some territory or domain (often in large numbers) | - |
| (noun) the mistake of incurring liability or blame | - |
| indecision | (noun) the trait of irresolution; a lack of firmness of character or purpose | Synonyms: indecisiveness |
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| (noun) doubt concerning two or more possible alternatives or courses of action | Synonyms: indecisiveness, irresolution |
| infusion | (noun) (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force) | - |
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| (noun) the act of infusing or introducing a certain modifying element or quality | - |
| (noun) the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water) | - |
| (noun) a solution obtained by steeping or soaking a substance (usually in water) | Synonyms: extract |
| intension | (noun) what you must know in order to determine the reference of an expression | Synonyms: connotation |
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| intercession | (noun) the act of intervening (as to mediate a dispute, etc.) | Synonyms: intervention |
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| (noun) a prayer to God on behalf of another person | - |
| intermission | (noun) the act of suspending activity temporarily | - |
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| (noun) a time interval during which there is a temporary cessation of something | Synonyms: break, interruption, pause, suspension |
| interspersion | (noun) the act of combining one thing at intervals among other things | Synonyms: interspersal |
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| intromission | (noun) the act of putting one thing into another | Synonyms: insertion, introduction |
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| introversion | (noun) (psychology) an introverted disposition; concern with one's own thoughts and feelings | - |
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| (noun) the folding in of an outer layer so as to form a pocket in the surface | Synonyms: infolding, intussusception, invagination |
| (noun) the condition of being folded inward or sheathed | Synonyms: invagination |
| intrusion | (noun) entry to another's property without right or permission | Synonyms: encroachment, trespass, usurpation, violation |
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| (noun) entrance by force or without permission or welcome | - |
| (noun) any entry into an area not previously occupied | Synonyms: encroachment, invasion |
| (noun) rock produced by an intrusive process | - |
| (noun) the forcing of molten rock into fissures or between strata of an earlier rock formation | - |
| invasion | (noun) the act of invading; the act of an army that invades for conquest or plunder | - |
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| (noun) any entry into an area not previously occupied | Synonyms: encroachment, intrusion |
| (noun) (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body | - |
| inversion | (noun) turning upside down; setting on end | Synonyms: upending |
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| (noun) the act of turning inside out | Synonyms: eversion, everting |
| (noun) a term formerly used to mean taking on the gender role of the opposite sex | Synonyms: sexual inversion |
| (noun) the reversal of the normal order of words | Synonyms: anastrophe |
| (noun) (counterpoint) a variation of a melody or part in which ascending intervals are replaced by descending intervals and vice versa | - |
| (noun) (genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversed | - |
| (noun) the layer of air near the earth is cooler than an overlying layer | - |
| (noun) a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versa | - |
| (noun) abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth) | - |
| lesion | (noun) any localized abnormal structural change in a bodily part | - |
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| (noun) an injury to living tissue (especially an injury involving a cut or break in the skin) | Synonyms: wound |
| malocclusion | (noun) (dentistry) a condition in which the opposing teeth do not mesh normally | - |
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| mansion | (noun) a large and imposing house | Synonyms: hall, manse, mansion house, residence |
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| (noun) (astrology) one of 12 equal areas into which the zodiac is divided | Synonyms: house, planetary house, sign, sign of the zodiac, star sign |
| manumission | (noun) the formal act of freeing from slavery | - |
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| mcmansion | (noun) a generic, mass-produced luxury home | - |
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| misapprehension | (noun) an understanding of something that is not correct | Synonyms: mistake, misunderstanding |
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| mission | (noun) a special assignment that is given to a person or group | Synonyms: charge, commission |
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| (noun) an operation that is assigned by a higher headquarters | Synonyms: military mission |
| (noun) the organized work of a religious missionary | Synonyms: missionary work |
| (noun) a group of representatives or delegates | Synonyms: commission, delegacy, delegation, deputation |
| (noun) an organization of missionaries in a foreign land sent to carry on religious work | Synonyms: foreign mission, missionary post, missionary station |
| missionary | (noun) someone who attempts to convert others to a particular doctrine or program | - |
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| (noun) someone sent on a mission--especially a religious or charitable mission to a foreign country | Synonyms: missioner |
| missioner | (noun) someone sent on a mission--especially a religious or charitable mission to a foreign country | Synonyms: missionary |
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| multidimensionality | (noun) The property of having many aspects or facets. | - |
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| nasion | (noun) the craniometric point at the bridge of the nose where the frontal and nasal bones of the skull meet | - |
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| neoexpressionism | (noun) an art movement based on expressionism; developed in 1980s in Europe and United States; crudely drawn garish paintings | - |
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| nonaggression | (noun) a policy of not initiating hostilities | - |
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| obsession | (noun) an unhealthy and compulsive preoccupation with something or someone | Synonyms: fixation |
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| (noun) an irrational motive for performing trivial or repetitive actions, even against your will | Synonyms: compulsion |
| occasion | (noun) an event that occurs at a critical time | Synonyms: juncture |
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| (noun) a formal or official social gathering or ceremony of people | Synonyms: affair, function, social affair, social function, social gathering, social occasion |
| (noun) a rational motive for a belief or action | Synonyms: ground, reason |
| (noun) an opportunity to do something | - |
| (noun) the time of a particular event | - |
| occasions | (noun) something you have to do | - |
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| occlusion | (noun) the act of blocking | Synonyms: blockage, closure |
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| (noun) an obstruction in a pipe or tube | Synonyms: block, blockage, closure, stop, stoppage |
| (noun) (dentistry) the normal spatial relation of the teeth when the jaws are closed | - |
| (noun) (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft | Synonyms: occluded front |
| (noun) closure or blockage (as of a blood vessel) | - |
| omission | (noun) a mistake resulting from neglect | Synonyms: skip |
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| (noun) neglecting to do something; leaving out or passing over something | - |
| (noun) any process whereby sounds or words are left out of spoken words or phrases | Synonyms: deletion |
| (noun) something that has been omitted | - |
| oppression | (noun) the act of subjugating by cruelty | Synonyms: subjugation |
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| (noun) a feeling of being oppressed | Synonyms: oppressiveness |
| (noun) the state of being kept down by unjust use of force or authority: | - |
| paraprofessional | (noun) a trained worker who is not a member of a profession but who assists a professional | - |
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| passion | (noun) the trait of being intensely emotional | Synonyms: heat, warmth |
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| (noun) any object of warm affection or devotion | Synonyms: love |
| (noun) a strong feeling or emotion | Synonyms: passionateness |
| (noun) a feeling of strong sexual desire | - |
| (noun) an irrational but irresistible motive for a belief or action | Synonyms: cacoethes, mania |
| (noun) something that is desired intensely | Synonyms: rage |
| passionateness | (noun) a strong feeling or emotion | Synonyms: passion |
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| passionflower | (noun) any of various chiefly tropical American vines some bearing edible fruit | Synonyms: passionflower vine |
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| pension | (noun) a regular payment to a person that is intended to allow them to subsist without working | - |
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| pensionary | (noun) a person who works only for money | Synonyms: hireling |
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| (noun) the beneficiary of a pension fund | Synonyms: pensioner |
| pensioner | (noun) the beneficiary of a pension fund | Synonyms: pensionary |
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| percussion | (noun) the act of exploding a percussion cap | - |
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| (noun) the act of playing a percussion instrument | - |
| (noun) tapping a part of the body for diagnostic purposes | Synonyms: pleximetry |
| (noun) the section of a band or orchestra that plays percussion instruments | Synonyms: percussion section, rhythm section |
| percussionist | (noun) a musician who plays percussion instruments | - |
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| perfusion | (noun) pumping a liquid into an organ or tissue (especially by way of blood vessels) | - |
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| permission | (noun) the act of giving a formal (usually written) authorization | Synonyms: license, permit |
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| (noun) approval to do something | - |
| persuasion | (noun) a personal belief or judgment that is not founded on proof or certainty | Synonyms: opinion, sentiment, thought, view |
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| (noun) the act of persuading (or attempting to persuade); communication intended to induce belief or action | Synonyms: suasion |
| pervasion | (noun) the process of permeating or infusing something with a substance | Synonyms: permeation, suffusion |
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| perversion | (noun) the action of perverting something (turning it to a wrong use) | - |
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| (noun) an aberrant sexual practice | Synonyms: sexual perversion |
| (noun) a curve that reverses the direction of something | - |
| photoemission | (noun) an emission of photoelectrons (especially from a metallic surface) | - |
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| plosion | (noun) the terminal forced release of pressure built up during the occlusive phase of a stop consonant | Synonyms: explosion |
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| possession | (noun) anything owned or possessed | - |
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| (noun) the act of having and controlling property | Synonyms: ownership |
| (noun) (sport) the act of controlling the ball (or puck) | - |
| (noun) the trait of resolutely controlling your own behavior | Synonyms: self-command, self-control, self-possession, self-will, will power, willpower |
| (noun) a territory that is controlled by a ruling state | - |
| (noun) a mania restricted to one thing or idea | Synonyms: monomania |
| (noun) being controlled by passion or the supernatural | - |
| precession | (noun) the act of preceding in time or order or rank (as in a ceremony) | Synonyms: precedence, precedency |
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| (noun) the motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone | - |
| precision | (noun) the quality of being reproducible in amount or performance | Synonyms: preciseness |
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| preclusion | (noun) the act of preventing something by anticipating and disposing of it effectively | Synonyms: forestalling, obviation |
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| prehension | (noun) the act of gripping something firmly with the hands (or the tentacles) | Synonyms: grasping, seizing, taking hold |
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| prepossession | (noun) an opinion formed beforehand without adequate evidence | Synonyms: parti pris, preconceived idea, preconceived notion, preconceived opinion, preconception |
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| (noun) the condition of being prepossessed | - |
| pretension | (noun) a false or unsupportable quality | Synonyms: pretence, pretense |
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| (noun) the quality of being pretentious (behaving or speaking in such a manner as to create a false appearance of great importance or worth) | Synonyms: largeness, pretentiousness |
| (noun) the advancing of a claim | - |
| pretermission | (noun) letting pass without notice | - |
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| prevision | (noun) the power to foresee the future | Synonyms: prescience |
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| (noun) a prophetic vision (as in a dream) | - |
| (noun) seeing ahead; knowing in advance; foreseeing | Synonyms: farsightedness, foresight, prospicience |
| (noun) the act of predicting (as by reasoning about the future) | Synonyms: anticipation, prediction |
| procession | (noun) the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation | - |
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| (noun) the act of moving forward (as toward a goal) | Synonyms: advance, advancement, forward motion, onward motion, progress, progression |
| (noun) (theology) the origination of the Holy Spirit at Pentecost | Synonyms: emanation, rise |
| processional | (noun) religious music used in a procession | Synonyms: prosodion |
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| profession | (noun) an occupation requiring special education (especially in the liberal arts or sciences) | - |
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| (noun) an open avowal (true or false) of some belief or opinion | Synonyms: professing |
| (noun) affirmation of acceptance of some religion or faith | - |
| (noun) the body of people in a learned occupation | - |
| professional | (noun) a person engaged in one of the learned professions | Synonyms: professional person |
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| (noun) an authority qualified to teach apprentices | Synonyms: master |
| (noun) an athlete who plays for pay | Synonyms: pro |
| professionalisation | (noun) the social process whereby people come to engage in an activity for pay or as a means of livelihood | Synonyms: professionalization |
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| professionalism | (noun) the expertness characteristic of a professional person | - |
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| professionalization | (noun) the social process whereby people come to engage in an activity for pay or as a means of livelihood | Synonyms: professionalisation |
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| profusion | (noun) the property of being extremely abundant | Synonyms: cornucopia, profuseness, richness |
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| progression | (noun) the act of moving forward (as toward a goal) | Synonyms: advance, advancement, forward motion, onward motion, procession, progress |
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| (noun) a movement forward | Synonyms: advance, progress |
| (noun) a series with a definite pattern of advance | Synonyms: patterned advance |
| prolusion | (noun) exercising in preparation for strenuous activity | Synonyms: tune-up, warm-up |
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| (noun) a short introductory essay preceding the text of a book | Synonyms: foreword, preface |
| propulsion | (noun) the act of propelling | Synonyms: actuation |
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| (noun) a propelling force | - |
| protrusion | (noun) the act of projecting out from something | Synonyms: jut, jutting, projection |
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| (noun) something that bulges out or is protuberant or projects from its surroundings | Synonyms: bulge, bump, excrescence, extrusion, gibbosity, gibbousness, hump, jut, prominence, protuberance, swelling |
| provision | (noun) the activity of supplying or providing something | Synonyms: supply, supplying |
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| (noun) the cognitive process of thinking about what you will do in the event of something happening | Synonyms: planning, preparation |
| (noun) a stipulated condition | Synonyms: proviso |
| (noun) a store or supply of something (especially of food or clothing or arms) | - |
| provisioner | (noun) a supplier of victuals or supplies to an army | Synonyms: sutler, victualer, victualler |
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| provisions | (noun) a stock or supply of foods | Synonyms: commissariat, provender, viands, victuals |
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| readmission | (noun) the act of admitting someone again | - |
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| recession | (noun) the act of becoming more distant | Synonyms: receding |
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| (noun) the act of ceding back | Synonyms: ceding back |
| (noun) the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service | Synonyms: recessional |
| (noun) a small concavity | Synonyms: corner, niche, recess |
| (noun) the state of the economy declines; a widespread decline in the GDP and employment and trade lasting from six months to a year | - |
| recessional | (noun) a hymn that is sung at the end of a service as the clergy and choir withdraw | - |
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| (noun) the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service | Synonyms: recession |
| recission | (noun) (law) the act of rescinding; the cancellation of a contract and the return of the parties to the positions they would have had if the contract had not been made | Synonyms: rescission |
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| recursion | (noun) (mathematics) an expression such that each term is generated by repeating a particular mathematical operation; also, the repeated application or execution of a pattern, function or definition; an expression that is recursive | - |
|---|
| regression | (noun) returning to a former state | Synonyms: regress, retrogression, retroversion, reversion |
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| (noun) the relation between selected values of x and observed values of y (from which the most probable value of y can be predicted for any value of x) | Synonyms: regression toward the mean, simple regression, statistical regression |
| (noun) (psychiatry) a defense mechanism in which you flee from reality by assuming a more infantile state | - |
| (noun) an abnormal state in which development has stopped prematurely | Synonyms: arrested development, fixation, infantile fixation |
| remission | (noun) the act of absolving or remitting; formal redemption as pronounced by a priest in the sacrament of penance | Synonyms: absolution, remission of sin, remittal |
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| (noun) (law) the act of remitting (especially the referral of a law case to another court) | Synonyms: remit, remitment |
| (noun) an abatement in intensity or degree (as in the manifestations of a disease) | Synonyms: remittal, subsidence |
| (noun) a payment of money sent to a person in another place | Synonyms: remitment, remittal, remittance |
| repercussion | (noun) a movement back from an impact | Synonyms: backlash, rebound, recoil |
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| (noun) a remote or indirect consequence of some action | Synonyms: reverberation |
| repossession | (noun) the action of regaining possession (especially the seizure of collateral securing a loan that is in default) | - |
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| reprehension | (noun) an act or expression of criticism and censure | Synonyms: rebuke, reprimand, reproof, reproval |
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| repression | (noun) the act of repressing; control by holding down | - |
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| (noun) (psychiatry) the classical defense mechanism that protects you from impulses or ideas that would cause anxiety by preventing them from becoming conscious | - |
| (noun) a state of forcible subjugation | - |
| repulsion | (noun) the act of repulsing or repelling an attack; a successful defensive stand | Synonyms: standoff |
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| (noun) intense aversion | Synonyms: horror, repugnance, revulsion |
| (noun) the force by which bodies repel one another | Synonyms: repulsive force |
| rescission | (noun) (law) the act of rescinding; the cancellation of a contract and the return of the parties to the positions they would have had if the contract had not been made | Synonyms: recission |
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| resuspension | (noun) a renewed suspension of insoluble particles after they have been precipitated | - |
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