| abacinate | (verb) blind by holding a red-hot metal plate before someone's eyes | - |
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| abactinal | (adjective) (of radiate animals) located on the surface or end opposite to that on which the mouth is situated | - |
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| abdominal | (adjective) of or relating to or near the abdomen | - |
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| (noun) the muscles of the abdomen | Synonyms: ab, abdominal muscle |
| ablutionary | (adjective) cleansing the body by washing; especially ritual washing of e.g. hands | Synonyms: cleansing |
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| abolitionary | (adjective) relating to or favoring abolition, especially abolition of slavery | - |
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| abominable | (adjective) exceptionally bad or displeasing | Synonyms: atrocious, awful, dreadful, painful, terrible, unspeakable |
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| (adjective) unequivocally detestable | Synonyms: detestable, execrable, odious |
| abominably | (adverb) in a terrible manner | Synonyms: abysmally, atrociously, awfully, rottenly, terribly |
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| (adverb) in an offensive and hateful manner | Synonyms: detestably, odiously, repulsively |
| abominate | (verb) find repugnant | Synonyms: abhor, execrate, loathe |
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| abomination | (noun) an action that is vicious or vile; an action that arouses disgust or abhorrence | - |
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| (noun) hate coupled with disgust | Synonyms: abhorrence, detestation, execration, loathing, odium |
| (noun) a person who is loathsome or disgusting | - |
| abominator | (noun) one who hates or loathes | Synonyms: loather |
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| aboriginal | (adjective) characteristic of or relating to people inhabiting a region from the beginning | Synonyms: native |
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| (adjective) having existed from the beginning; in an earliest or original stage or state | Synonyms: primaeval, primal, primeval, primordial |
| (noun) an indigenous person who was born in a particular place | Synonyms: aborigine, indigen, indigene, native |
| accessional | (adjective) of or constituting an accession | - |
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| accommodational | (adjective) of or relating to the accommodation of the lens of the eye | - |
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| accretionary | (adjective) marked or produced by accretion | - |
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| acculturational | (adjective) of or relating to acculturation | Synonyms: acculturative |
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| acinar | (adjective) pertaining to the individual parts making up an aggregate fruit like a blackberry | - |
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| (adjective) pertaining to one of the small sacs (as in a compound gland) | Synonyms: acinic, acinose, acinous |
| acroanaesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanesthesia |
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| actinal | (adjective) (of radiate organisms) located on the surface or end on which the mouth is situated | - |
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| actionable | (adjective) affording grounds for legal action | - |
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| acuminate | (adjective) (of a leaf shape) narrowing to a slender point | - |
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| (verb) make sharp or acute; taper; make (something) come to a point | - |
| adaptational | (adjective) of or relating to adaptation | - |
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| additional | (adjective) further or added | Synonyms: extra |
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| additionally | (adverb) in addition, by way of addition; furthermore | Synonyms: to boot |
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| adnate | (adjective) of unlike parts or organs; growing closely attached | - |
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| adrenal | (adjective) of or pertaining to the adrenal glands or their secretions | - |
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| (adjective) near the kidneys | - |
| (noun) either of a pair of complex endocrine glands situated near the kidney | Synonyms: adrenal gland, suprarenal gland |
| adrenalectomy | (noun) surgical removal of one or both adrenal glands | Synonyms: suprarenalectomy |
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| adrenaline | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, epinephrin, epinephrine |
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| adrenarche | (noun) the increase in activity of the adrenal glands just before puberty | - |
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| adynamia | (noun) lack of strength or vigor (especially from illness) | - |
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| adynamic | (adjective) characterized by an absence of force or forcefulness | Synonyms: undynamic |
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| (adjective) lacking energy or vitality | Synonyms: asthenic, debilitated, enervated |
| aerodynamic | (adjective) of or relating to aerodynamics | - |
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| (adjective) designed or arranged to offer the least resistance to fluid flow | Synonyms: flowing, sleek, streamlined |
| aerodynamics | (noun) the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow | Synonyms: aeromechanics |
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| aeronaut | (noun) someone who operates an aircraft | Synonyms: aviator, flier, flyer |
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| aeronautic | (adjective) of or pertaining to aeronautics | Synonyms: aeronautical |
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| aeronautical | (adjective) of or pertaining to aeronautics | Synonyms: aeronautic |
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| aeronautics | (noun) the theory and practice of navigation through air or space | Synonyms: astronautics |
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| aeschynanthus | (noun) a plant of the genus Aeschynanthus having somewhat red or orange flowers and seeds having distinctive hairs at base and apex | - |
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| affectional | (adjective) characterized by emotion | Synonyms: affective, emotive |
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| affectionate | (adjective) having or displaying warmth or affection | Synonyms: fond, lovesome, tender |
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| affectionately | (adverb) with affection | Synonyms: dear, dearly |
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| affectionateness | (noun) a quality proceeding from feelings of affection or love | Synonyms: fondness, lovingness, warmth |
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| (noun) a positive feeling of liking | Synonyms: affection, fondness, heart, philia, tenderness, warmheartedness, warmness |
| affinal | (adjective) (anthropology) related by marriage | Synonyms: affine |
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| aficionado | (noun) a serious devotee of some particular music genre or musical performer | - |
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| (noun) a fan of bull fighting | - |
| agglutinate | (adjective) united as if by glue | Synonyms: agglutinative |
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| (verb) clump together; as of bacteria, red blood cells, etc. | - |
| (verb) string together (morphemes in an agglutinating language) | - |
| agglutination | (noun) the building of words from component morphemes that retain their form and meaning in the process of combining | - |
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| (noun) a clumping of bacteria or red cells when held together by antibodies (agglutinins) | - |
| (noun) the coalescing of small particles that are suspended in solution; these larger masses are then (usually) precipitated | Synonyms: agglutinating activity |
| agglutinative | (adjective) united as if by glue | Synonyms: agglutinate |
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| (adjective) forming derivative or compound words by putting together constituents each of which expresses a single definite meaning | Synonyms: polysynthetic |
| agnail | (noun) a loose narrow strip of skin near the base of a fingernail; tearing it produces a painful sore that is easily infected | Synonyms: hangnail |
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| agnate | (adjective) related on the father's side | Synonyms: agnatic, paternal |
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| (noun) one related on the father's side | Synonyms: patrikin, patrilineal kin, patrilineal sib, patrisib |
| agnathan | (noun) eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms | Synonyms: jawless fish, jawless vertebrate |
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| agnatic | (adjective) related on the father's side | Synonyms: agnate, paternal |
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| agnation | (noun) line of descent traced through the paternal side of the family | Synonyms: patrilineage |
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| agonadal | (adjective) lacking gonads | - |
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| agonal | (adjective) pertaining to or associated with agony (especially death agonies) | - |
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| albinal | (adjective) of or pertaining to or affected by albinism | Synonyms: albinic, albinistic, albinotic |
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| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
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| alienable | (adjective) transferable to another owner | - |
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| alienage | (noun) the quality of being alien | Synonyms: alienism |
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| alienate | (verb) arouse hostility or indifference in where there had formerly been love, affection, or friendliness | Synonyms: disaffect, estrange |
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| (verb) make withdrawn or isolated or emotionally dissociated | - |
| (verb) transfer property or ownership | Synonyms: alien |
| alienated | (adjective) caused to be unloved | Synonyms: estranged |
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| (adjective) socially disoriented | Synonyms: anomic, disoriented |
| alienating | (adjective) causing hostility or loss of friendliness | - |
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| alienation | (noun) the action of alienating; the action of causing to become unfriendly | - |
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| (noun) (law) the voluntary and absolute transfer of title and possession of real property from one person to another | - |
| (noun) the feeling of being alienated from other people | Synonyms: disaffection, estrangement |
| (noun) separation resulting from hostility | Synonyms: estrangement |
| alienator | (noun) an unpleasant person who causes friendly people to become indifferent or unfriendly or hostile | - |
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| alkylbenzenesulfonate | (noun) sulfonate of alkyl benzene | - |
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| almanac | (noun) an annual publication containing tabular information in a particular field or fields arranged according to the calendar of a given year | - |
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| (noun) an annual publication including weather forecasts and other miscellaneous information arranged according to the calendar of a given year | Synonyms: farmer's calendar |
| alternate | (adjective) of leaves and branches etc; first on one side and then on the other in two ranks along an axis; not paired | - |
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| (adjective) serving or used in place of another | Synonyms: alternative, substitute |
| (adjective) occurring by turns; first one and then the other | Synonyms: alternating |
| (adjective) every second one of a series | - |
| (noun) someone who takes the place of another person | Synonyms: replacement, surrogate |
| (verb) do something in turns | Synonyms: take turns |
| (verb) go back and forth; swing back and forth between two states or conditions | Synonyms: jump |
| (verb) reverse (a direction, attitude, or course of action) | Synonyms: flip-flop, flip, interchange, switch, tack |
| (verb) be an understudy or alternate for a role | Synonyms: understudy |
| (verb) exchange people temporarily to fulfill certain jobs and functions | - |
| alternately | (adverb) in an alternating sequence or position | - |
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| alternating | (adjective) (of a current) reversing direction | - |
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| (adjective) occurring by turns; first one and then the other | Synonyms: alternate |
| alternation | (noun) successive change from one thing or state to another and back again | - |
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| alternative | (adjective) necessitating a choice between mutually exclusive possibilities | - |
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| (adjective) serving or used in place of another | Synonyms: alternate, substitute |
| (adjective) pertaining to unconventional choices | - |
| (noun) one of a number of things from which only one can be chosen | Synonyms: choice, option |
| alternatively | (adverb) in place of, or as an alternative to | Synonyms: instead, or else |
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| alternator | (noun) an old term for an electric generator that produces alternating current (especially in automobiles) | - |
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| altitudinal | (adjective) pertaining to altitude | - |
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| alumina | (noun) any of various forms of aluminum oxide occurring naturally as corundum | Synonyms: aluminium oxide, aluminum oxide |
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| aluminate | (noun) a compound of alumina and a metallic oxide | - |
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| alumna | (noun) a female person who has received a degree from a school (high school or college or university) | - |
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| amboyna | (noun) tree native to southeastern Asia having reddish wood with a mottled or striped black grain | Synonyms: padauk, padouk, Pterocarpus indicus |
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| (noun) mottled curly-grained wood of Pterocarpus indicus | Synonyms: Andaman redwood |
| amenability | (noun) the trait of being cooperative | Synonyms: amenableness, cooperativeness |
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| amenable | (adjective) disposed or willing to conform | Synonyms: conformable |
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| (adjective) liable to answer to a higher authority | - |
| (adjective) responsive to suggestions and influences | Synonyms: tractable |
| (adjective) open to being acted upon in a certain way | - |
| amenableness | (noun) the trait of being cooperative | Synonyms: amenability, cooperativeness |
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| ammonal | (noun) Ammonal is an explosive made up of ammonium nitrate and aluminum powder. | - |
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| amphisbaena | (noun) (classical mythology) a serpent with a head at each end of its body | - |
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| ana | (noun) a collection of anecdotes about a person or place | - |
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| anabatic | (adjective) of an air current or wind; rising especially up a slope | - |
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| anabiosis | (noun) suspended animation in organisms during periods of extreme drought from which they revive when moisture returns | - |
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| anabiotic | (adjective) of or related to the state of anabiosis | - |
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| anabolic | (adjective) characterized by or promoting constructive metabolism | - |
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| (adjective) of or related to the synthetic phase of metabolism | - |
| anabolism | (noun) the synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy | Synonyms: constructive metabolism |
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| anachronic | (adjective) chronologically misplaced | Synonyms: anachronistic, anachronous |
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| anachronism | (noun) an artifact that belongs to another time | - |
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| (noun) a person who seems to be displaced in time; who belongs to another age | - |
| (noun) something located at a time when it could not have existed or occurred | Synonyms: misdating, mistiming |
| anachronistic | (adjective) chronologically misplaced | Synonyms: anachronic, anachronous |
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| anachronistically | (adverb) in an anachronistic manner | - |
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| anachronous | (adjective) chronologically misplaced | Synonyms: anachronic, anachronistic |
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| anaclinal | (adjective) of valleys and rivers; progressing in a direction opposite to the dip in surrounding rock strata | - |
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| anaclisis | (noun) (psychoanalysis) relationship marked by strong dependence on others; especially a libidinal attachment to e.g. a parental figure | - |
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| anaclitic | (adjective) of or related to relationships that are characterized by the strong dependence of one person on another | - |
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| anacoluthia | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthon |
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| anacoluthic | (adjective) of or related to syntactic inconsistencies of the sort known as anacoluthons | - |
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| anacoluthon | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthia |
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| anaconda | (noun) large arboreal boa of tropical South America | Synonyms: Eunectes murinus |
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| anadiplosis | (noun) repetition of the final words of a sentence or line at the beginning of the next | Synonyms: reduplication |
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