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Pronunciation:  an'tagunist

WordNet Dictionary
  1. [n]  a drug that neutralizes or counteracts the effects of another drug
  2. [n]  a muscle that relaxes while another contracts
  3. [n]  someone who offers opposition

ANTAGONIST is a 10 letter word that starts with A.


 Synonyms: adversary, opponent, opposer, resister
 Antonyms: synergist
 See Also: antagonistic muscle, Antichrist, drug, dueler, duelist, dueller, duellist, enemy, estrogen antagonist, foe, foeman, human, individual, Luddite, mortal, narcotic antagonist, opposition, person, somebody, someone, soul, tamoxifen, withstander



Webster's 1913 Dictionary
  1. \An*tag"o*nist\, n. [L. antagonista, Gr. ?; ? against
    + ? combatant, champion, fr. ?: cf. F. antagoniste. See
    1. One who contends with another, especially in combat; an
       adversary; an opponent.
             Antagonist of Heaven's Almigthy King. --Milton.
             Our antagonists in these controversies. --Hooker.
    2. (Anat.) A muscle which acts in opposition to another; as a
       flexor, which bends a part, is the antagonist of an
       extensor, which extends it.
    3. (Med.) A medicine which opposes the action of another
       medicine or of a poison when absorbed into the blood or
    Syn: Adversary; enemy; opponent; toe; competitor. See
  2. \An*tag"o*nist\, a.
    Antagonistic; opposing; counteracting; as, antagonist schools
    of philosophy.
Medical Dictionary
 Definition: One agent that opposes or fights the action of another. For example, insulin lowers the level of glucose (sugar) in the blood, whereas glucagon raises it; therefore, insulin and glucagon are antagonists.
Biology Dictionary
 Definition: An interaction between chemicals in which one partially or completely inhibits the effect of the other (e.g., a drug that blocks a hormone's receptor site would be a hormone antagonist).
Thesaurus Terms
 Related Terms: actor, actress, adversary, anti, antihero, archenemy, assailant, bad guy, barnstormer, bit, bit part, bitter enemy, cast, character, character actor, character man, character woman, child actor, combatant, competition, competitor, con, contender, cue, devil, diseur, diseuse, dramatizer, enemy, fat part, feeder, foe, foeman, foil, heavy, hero, heroine, histrio, histrion, ingenue, juvenile, lead, lead role, leading lady, leading man, leading woman, lines, match, matinee idol, mime, mimer, mimic, monologist, mummer, open enemy, opponent, opposer, opposing party, opposite camp, opposition, oppugnant, pantomime, pantomimist, part, person, personage, piece, playactor, player, protagonist, protean actor, public enemy, reciter, role, Roscius, side, soubrette, stage performer, stage player, stooge, straight man, straight part, stroller, strolling player, supporting character, supporting role, sworn enemy, the loyal opposition, the opposition, theatrical, thespian, title role, trouper, utility man, villain, walking part, walk-on