| plausive | (adjective) expressing or manifesting praise or approval | Synonyms: affirmative, approbative, approbatory, approving |
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| plosive | (noun) a consonant produced by stopping the flow of air at some point and suddenly releasing it | Synonyms: occlusive, plosive consonant, plosive speech sound, stop, stop consonant |
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| positive | (adjective) characterized by or displaying affirmation or acceptance or certainty etc. | - |
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| (adjective) indicating existence or presence of a suspected condition or pathogen | Synonyms: confirming |
| (adjective) reckoned, situated or tending in the direction which naturally or arbitrarily is taken to indicate increase or progress or onward motion | - |
| (adjective) of or relating to positivism | Synonyms: positivist, positivistic |
| (adjective) involving advantage or good | Synonyms: plus |
| (adjective) persuaded of; very sure | Synonyms: confident, convinced |
| (adjective) having a positive charge | Synonyms: electropositive, positively charged |
| (adjective) marked by excessive confidence | Synonyms: cocksure, overconfident |
| (adjective) formally laid down or imposed | Synonyms: prescribed |
| (adjective) greater than zero | - |
| (adjective) impossible to deny or disprove | Synonyms: incontrovertible, irrefutable |
| (noun) a film showing a photographic image whose tones correspond to those of the original subject | - |
| (noun) the primary form of an adjective or adverb; denotes a quality without qualification, comparison, or relation to increase or diminution | Synonyms: positive degree |
| possessive | (adjective) serving to express or indicate possession | Synonyms: genitive |
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| (adjective) desirous of owning | - |
| (adjective) having or showing a desire to control or dominate | - |
| (noun) the case expressing ownership | Synonyms: genitive, genitive case, possessive case |
| postoperative | (adjective) happening or done after a surgical operation | - |
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| postpositive | (adjective) (of a modifier) placed after another word | - |
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| precative | (adjective) expressing entreaty or supplication | Synonyms: precatory |
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| preclusive | (adjective) made impossible | Synonyms: obviating |
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| precognitive | (adjective) foreseeing the future | Synonyms: clairvoyant, second-sighted |
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| preconceive | (verb) conceive beforehand | - |
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| predicative | (adjective) of adjectives; relating to or occurring within the predicate of a sentence | - |
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| predictive | (adjective) of or relating to prediction; having value for making predictions | Synonyms: prognostic, prognosticative |
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| preemptive | (adjective) designed or having the power to deter or prevent an anticipated situation or occurrence | Synonyms: pre-emptive |
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| prefigurative | (adjective) indistinctly prophetic | Synonyms: adumbrative, foreshadowing |
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| preoperative | (adjective) happening or done before and in preparation for a surgical operation | - |
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| preparative | (adjective) preceding and preparing for something | Synonyms: preparatory, propaedeutic |
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| prerogative | (noun) a right reserved exclusively by a particular person or group (especially a hereditary or official right) | Synonyms: exclusive right, perquisite, privilege |
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| prescriptive | (adjective) pertaining to giving directives or rules | Synonyms: normative |
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| preservative | (adjective) tending or having the power to preserve | - |
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| (noun) a chemical compound that is added to protect against decay or decomposition | - |
| presumptive | (adjective) affording reasonable grounds for belief or acceptance | - |
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| (adjective) having a reasonable basis for belief or acceptance | - |
| preventative | (adjective) tending to prevent or hinder | Synonyms: preventive |
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| (adjective) preventing or contributing to the prevention of disease | Synonyms: preventive, prophylactic |
| (noun) remedy that prevents or slows the course of an illness or disease | Synonyms: preventive, prophylactic |
| (noun) an agent or device intended to prevent conception | Synonyms: birth control device, contraceptive, contraceptive device, preventive, prophylactic device |
| (noun) any obstruction that impedes or is burdensome | Synonyms: encumbrance, hinderance, hindrance, hitch, incumbrance, interference, preventive |
| preventive | (adjective) tending to prevent or hinder | Synonyms: preventative |
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| (adjective) preventing or contributing to the prevention of disease | Synonyms: preventative, prophylactic |
| (noun) remedy that prevents or slows the course of an illness or disease | Synonyms: preventative, prophylactic |
| (noun) an agent or device intended to prevent conception | Synonyms: birth control device, contraceptive, contraceptive device, preventative, prophylactic device |
| (noun) any obstruction that impedes or is burdensome | Synonyms: encumbrance, hinderance, hindrance, hitch, incumbrance, interference, preventative |
| primitive | (adjective) used of preliterate or tribal or nonindustrial societies | - |
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| (adjective) of or created by one without formal training; simple or naive in style | Synonyms: naive |
| (adjective) little evolved from or characteristic of an earlier ancestral type | Synonyms: archaic |
| (adjective) belonging to an early stage of technical development; characterized by simplicity and (often) crudeness | Synonyms: crude, rude |
| (noun) a word serving as the basis for inflected or derived forms | - |
| (noun) a mathematical expression from which another expression is derived | - |
| (noun) a person who belongs to an early stage of civilization | Synonyms: primitive person |
| proactive | (adjective) descriptive of any event or stimulus or process that has an effect on events or stimuli or processes that occur subsequently | - |
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| (adjective) (of a policy or person or action) controlling a situation by causing something to happen rather than waiting to respond to it after it happens | - |
| probative | (adjective) tending to prove a particular proposition or to persuade you of the truth of an allegation | Synonyms: probatory |
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| procreative | (adjective) producing new life or offspring | Synonyms: generative, reproductive |
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| productive | (adjective) producing or capable of producing (especially abundantly) | - |
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| (adjective) having the ability to produce or originate | Synonyms: generative |
| (adjective) marked by great fruitfulness | Synonyms: fat, fertile, rich |
| (adjective) yielding positive results | - |
| prognosticative | (adjective) of or relating to prediction; having value for making predictions | Synonyms: predictive, prognostic |
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| progressive | (adjective) favoring or promoting progress | - |
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| (adjective) (of taxes) adjusted so that the rate increases as the amount of income increases | - |
| (adjective) advancing in severity | - |
| (adjective) gradually advancing in extent | - |
| (adjective) favoring or promoting reform (often by government action) | Synonyms: reform-minded, reformist |
| (adjective) (of a card game or a dance) involving a series of sections for which the participants successively change place or relative position | - |
| (noun) a person who favors a political philosophy of progress and reform and the protection of civil liberties | Synonyms: liberal, liberalist |
| (noun) a tense of verbs used in describing action that is on-going | Synonyms: continuous tense, imperfect, imperfect tense, progressive tense |
| prohibitive | (adjective) tending to discourage (especially of prices) | Synonyms: prohibitory |
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| promotive | (adjective) tending to further or encourage | - |
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| propagative | (adjective) characterized by propagation or relating to propagation | - |
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| propitiative | (adjective) intended to reconcile or appease | Synonyms: propitiatory |
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| proprioceptive | (adjective) of or relating to proprioception | - |
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| propulsive | (adjective) having the power to propel | - |
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| (adjective) tending to or capable of propelling | Synonyms: propellant, propellent, propelling |
| prospective | (adjective) of or concerned with or related to the future | - |
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| protective | (adjective) intended or adapted to afford protection of some kind | - |
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| (adjective) showing care | - |
| (adjective) (usually followed by `of') solicitously caring or mindful | - |
| protrusive | (adjective) thrusting outward | - |
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| provocative | (adjective) serving or tending to provoke, excite, or stimulate; stimulating discussion or exciting controversy | - |
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| (adjective) intentionally arousing sexual desire | - |
| psychoactive | (adjective) affecting the mind or mood or other mental processes | Synonyms: psychotropic |
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| punitive | (adjective) inflicting punishment | Synonyms: punitory |
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| purgative | (adjective) strongly laxative | Synonyms: cathartic, evacuant |
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| (noun) a purging medicine; stimulates evacuation of the bowels | Synonyms: aperient, cathartic, physic |
| purposive | (adjective) having or showing or acting with a purpose or design | - |
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| (adjective) having a purpose | Synonyms: goal-directed |
| putative | (adjective) purported; commonly put forth or accepted as true on inconclusive grounds | - |
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| putrefactive | (adjective) causing or promoting bacterial putrefaction | Synonyms: putrefacient |
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| qualitative | (adjective) involving distinctions based on qualities | - |
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| (adjective) relating to or involving comparisons based on qualities | - |
| quantitative | (adjective) expressible as a quantity or relating to or susceptible of measurement | - |
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| (adjective) (of verse) having a metric system based on relative duration of syllables | - |
| (adjective) relating to the measurement of quantity | - |
| radioactive | (adjective) exhibiting or caused by radioactivity | - |
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| radiosensitive | (adjective) sensitive to radiation | - |
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| ratiocinative | (adjective) based on exact thinking | - |
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| reactive | (adjective) participating readily in reactions | - |
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| (adjective) reacting to a stimulus | Synonyms: responsive |
| rebarbative | (adjective) serving or tending to repel | Synonyms: repellant, repellent |
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| receive | (verb) convert into sounds or pictures | - |
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| (verb) receive a specified treatment (abstract) | Synonyms: find, get, incur, obtain |
| (verb) accept as true or valid | - |
| (verb) regard favorably or with disapproval | - |
| (verb) bid welcome to; greet upon arrival | Synonyms: welcome |
| (verb) partake of the Holy Eucharist sacrament | - |
| (verb) express willingness to have in one's home or environs | Synonyms: invite, take in |
| (verb) register (perceptual input) | Synonyms: pick up |
| (verb) go through (mental or physical states or experiences) | Synonyms: experience, get, have |
| (verb) receive as a retribution or punishment | Synonyms: get |
| (verb) get something; come into possession of | Synonyms: have |
| (verb) have or give a reception | - |
| (verb) experience as a reaction | Synonyms: encounter, meet |
| receptive | (adjective) ready or willing to receive favorably | Synonyms: open |
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| (adjective) able to absorb liquid (not repellent) | - |
| (adjective) of a nerve fiber or impulse originating outside and passing toward the central nervous system | Synonyms: centripetal, sensory |
| (adjective) open to arguments, ideas, or change | - |
| recessive | (adjective) (of genes) producing its characteristic phenotype only when its allele is identical | - |
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| (adjective) of or pertaining to a recession | Synonyms: recessionary |
| (noun) an allele that produces its characteristic phenotype only when its paired allele is identical | Synonyms: recessive allele |
| reciprocative | (adjective) moving alternately backward and forward | Synonyms: reciprocatory |
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| (adjective) given or done or owed to each other | Synonyms: reciprocatory |
| recitative | (noun) a vocal passage of narrative text that a singer delivers with natural rhythms of speech | - |
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| reclusive | (adjective) providing privacy or seclusion | Synonyms: cloistered, secluded, sequestered |
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| (adjective) withdrawn from society; seeking solitude | Synonyms: recluse, withdrawn |
| recollective | (adjective) good at remembering | Synonyms: long, retentive, tenacious |
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| reconstructive | (adjective) helping to restore to good condition | Synonyms: rehabilitative |
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| recriminative | (adjective) countering one charge with another | Synonyms: recriminatory |
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| recuperative | (adjective) promoting recuperation | Synonyms: restorative |
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| recursive | (adjective) of or relating to a recursion | - |
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| redemptive | (adjective) of or relating to or resulting in redemption | Synonyms: redemptional, redemptory |
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| (adjective) bringing about salvation or redemption from sin | Synonyms: redeeming, saving |
| reductive | (adjective) characterized by or causing diminution or curtailment | - |
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| reflective | (adjective) capable of physically reflecting light or sound | - |
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| (adjective) devoted to matters of the mind | - |
| (adjective) deeply or seriously thoughtful | Synonyms: brooding, broody, contemplative, meditative, musing, pensive, pondering, ruminative |
| reflexive | (adjective) referring back to itself | Synonyms: self-referent |
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| (adjective) without volition or conscious control | Synonyms: automatic, reflex |
| (noun) a personal pronoun compounded with -self to show the agent's action affects the agent | Synonyms: reflexive pronoun |
| reformative | (adjective) tending to reform | Synonyms: reformatory |
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| refractive | (adjective) of or relating to or capable of refraction | Synonyms: refractile |
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| (adjective) capable of changing the direction (of a light or sound wave) | Synonyms: deflective |
| regressive | (adjective) opposing progress; returning to a former less advanced state | - |
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| (adjective) (of taxes) adjusted so that the rate decreases as the amount of income increases | - |
| regulative | (adjective) restricting according to rules or principles | Synonyms: regulatory |
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| rehabilitative | (adjective) designed to accomplish rehabilitation | - |
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| (adjective) helping to restore to good condition | Synonyms: reconstructive |
| reiterative | (adjective) marked by iteration | Synonyms: iterative |
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| rejective | (adjective) rejecting or tending to reject | - |
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| relative | (adjective) estimated by comparison; not absolute or complete | Synonyms: comparative |
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| (adjective) properly related in size or degree or other measurable characteristics; usually followed by `to' | Synonyms: proportional |
| (noun) an animal or plant that bears a relationship to another (as related by common descent or by membership in the same genus) | Synonyms: congenator, congener, congeneric |
| (noun) a person related by blood or marriage | Synonyms: relation |
| relive | (verb) experience again, often in the imagination | Synonyms: live over |
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| remunerative | (adjective) for which money is paid | Synonyms: compensable, paying, salaried, stipendiary |
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| (adjective) producing a sizeable profit | Synonyms: lucrative, moneymaking |
| renunciative | (adjective) used especially of behavior | Synonyms: renunciant, self-abnegating, self-denying |
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| repetitive | (adjective) characterized by repetition | Synonyms: repetitious |
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| (adjective) repetitive and persistent | Synonyms: insistent |
| representative | (adjective) standing for something else | - |
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| (adjective) being or characteristic of government by representation in which citizens exercise power through elected officers and representatives | - |
| (adjective) serving to represent or typify | - |
| (noun) an item of information that is typical of a class or group | Synonyms: example, illustration, instance |
| (noun) a person who represents others | - |
| (noun) a member of the United States House of Representatives | - |
| (noun) an advocate who represents someone else's policy or purpose | Synonyms: interpreter, spokesperson, voice |
| repressive | (adjective) restrictive of action | Synonyms: inhibitory, repressing |
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| reproductive | (adjective) producing new life or offspring | Synonyms: generative, procreative |
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| repudiative | (adjective) rejecting emphatically; e.g. refusing to pay or disowning | - |
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| repulsive | (adjective) possessing the ability to repel | - |
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| (adjective) offensive to the mind | Synonyms: abhorrent, detestable, obscene, repugnant |
| (adjective) so extremely ugly as to be terrifying | Synonyms: hideous |
| resistive | (adjective) exhibiting or relating to electrical resistance | - |
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| (adjective) disposed to or engaged in defiance of established authority | Synonyms: insubordinate, resistant |
| respective | (adjective) considered individually | Synonyms: several, various |
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| responsive | (adjective) readily reacting or replying to people or events or stimuli; showing emotion | - |
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| (adjective) containing or using responses; alternating | Synonyms: antiphonal |
| (adjective) reacting to a stimulus | Synonyms: reactive |
| restive | (adjective) impatient especially under restriction or delay | - |
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| (adjective) being in a tense state | Synonyms: edgy, high-strung, highly strung, jittery, jumpy, nervy, overstrung, uptight |
| restorative | (adjective) promoting recuperation | Synonyms: recuperative |
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| (adjective) tending to impart new life and vigor to | Synonyms: renewing, revitalising, revitalizing, reviving |
| (noun) a device for treating injury or disease | Synonyms: corrective |
| (noun) a medicine that strengthens and invigorates | Synonyms: tonic |
| restrictive | (adjective) serving to restrict | - |
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| (adjective) (of tariff) protective of national interests by restricting imports | - |
| retaliative | (adjective) of or relating to or having the nature of retribution | Synonyms: retaliatory, retributive, retributory, vindicatory |
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| retentive | (adjective) good at remembering | Synonyms: long, recollective, tenacious |
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| (adjective) having the capacity to retain something | - |
| (adjective) having the power, capacity, or quality of retaining water | - |
| retributive | (adjective) given or inflicted in requital according to merits or deserts | Synonyms: retributory, vindicatory |
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| (adjective) of or relating to or having the nature of retribution | Synonyms: retaliative, retaliatory, retributory, vindicatory |
| retroactive | (adjective) descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously | - |
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| (adjective) affecting things past | Synonyms: ex post facto, retro |
| retrogressive | (adjective) going from better to worse | Synonyms: retrograde |
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| retrospective | (adjective) concerned with or related to the past | - |
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| (noun) an exhibition of a representative selection of an artist's life work | - |
| reverberative | (adjective) characterized by resonance | Synonyms: resonant, resonating, resounding, reverberating |
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| reversive | (adjective) tending to be turned back | Synonyms: returning |
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| revive | (verb) give new life or energy to | Synonyms: animate, quicken, reanimate, recreate, renovate, repair, revivify, vivify |
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| (verb) cause to regain consciousness | Synonyms: resuscitate |
| (verb) return to consciousness | Synonyms: come to, resuscitate |
| (verb) be brought back to life, consciousness, or strength | - |
| (verb) restore from a depressed, inactive, or unused state | Synonyms: resurrect |
| rive | (verb) tear or be torn violently | Synonyms: pull, rend, rip |
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| (verb) separate or cut with a tool, such as a sharp instrument | Synonyms: cleave, split |