antidote (n.) Look up antidote at Dictionary.com
"remedy counteracting poison," 1510s (earlier in English as a Latin word), from Middle French antidot and directly from Latin antidotum "a remedy against poison," from Greek antidoton "given as a remedy," literally "given against," verbal adjective of antididonai "give in return," from anti- "against" + didonai "to give" (see date (n.1)). Compare Middle English antidotarie "treatise on drugs or medicines" (c. 1400).
Antietam Look up Antietam at Dictionary.com
place name, eastern U.S., from an Algonquian word perhaps meaning "swift water;" the name occurrs in Pennsylvania and Ohio, but the best-known is a creek near Sharpsburg in Washington County, Maryland, site of a bloody Civil War battle Sept. 17, 1862.
antifebrile Look up antifebrile at Dictionary.com
1660s, from anti- + febrile.
antigen (n.) Look up antigen at Dictionary.com
"substance that causes production of an antibody," 1908, from German Antigen, from French antigène (1899), from anti- (see anti-) + Greek -gen (see -gen).
Antigone Look up Antigone at Dictionary.com
daughter of Oedipus, her name may mean "in place of a mother" in Greek, from anti- "opposite, in place of" (see anti-) + gone "womb, childbirth, generation," from root of gignesthai "to be born" related to genos "race, birth, descent" (see genus).
Antigua Look up Antigua at Dictionary.com
Caribbean island, from Spanish fem. of antiguo, literally "ancient, antique" (see antique); discovered by Columbus in 1493 and named by him for the church of Santa Maria la Antigua ("Old St. Mary's") in Seville.
antihero (n.) Look up antihero at Dictionary.com
also anti-hero; 1714, from anti- + hero.
antihistamine (n.) Look up antihistamine at Dictionary.com
1933, from anti- + histamine.
antimatter (n.) Look up antimatter at Dictionary.com
also anti-matter, 1953, from anti- + matter (n.).
antimetabole (n.) Look up antimetabole at Dictionary.com
1590s, from Greek antimetabole, from anti- "opposite" (see anti-) + metabole "turning about" (see metabolism).
antimony (n.) Look up antimony at Dictionary.com
brittle metallic element, early 15c., from Old French antimoine and directly from Medieval Latin antimonium, an alchemist's term (used 11c. by Constantinus Africanus), origin obscure, probably a Latinization of Greek stimmi "powdered antimony, black antimony" (a cosmetic used to paint the eyelids), from some Arabic word (such as al 'othmud), unless the Arabic word is from the Greek or the Latin is from Arabic; probably ultimately from Egyptian stm "powdered antimony." In French folk etymology, anti-moine "monk's bane" (from moine).

As the name of a pure element, it is attested in English from 1788. Its chemical symbol Sb is for Stibium, the Latin name for "black antimony," which word was used also in English for "black antimony."
antinode (n.) Look up antinode at Dictionary.com
1872, from anti- + node.
antinomian (n.) Look up antinomian at Dictionary.com
"one who maintains the moral law is not binding on Christians under the law of grace," 1640s, from Medieval Latin Antinomi, name given to a sect of this sort that arose in Germany in 1535, from Greek anti- "opposite, against" (see anti-) + nomos "rule, law" (see numismatics).
antinomianism (n.) Look up antinomianism at Dictionary.com
1640s, from antinomian + -ism.
antinomy (n.) Look up antinomy at Dictionary.com
1590s, "contradiction in the laws," from Latin antinomia, from Greek antinomia "ambiguity in the law," from anti- "against" (see anti-) + nomos "law" (see numismatics). As a term in logic, from 1802 (Kant).
Antioch Look up Antioch at Dictionary.com
modern Antakya in Turkey, anciently the capital of Syria, founded c. 300 B.C.E. by Seleucus I Nictor and named for his father, Antiochus.
antioxidant Look up antioxidant at Dictionary.com
1920 (n.); 1932 (adj.), from anti- + oxidant.
antipasto (n.) Look up antipasto at Dictionary.com
1934, from Italian antipasto, from anti- "before" (see ante) + pasto "food," from Latin pascere "to feed" (see pastor). Earlier anglicized as antepast (1590).
antipathetic (adj.) Look up antipathetic at Dictionary.com
1630s "having an antipathy for," from an adjectival construction from Greek antipathein (see antipathy). Related: antipathetical (c. 1600); antipathetically.
antipathic (adj.) Look up antipathic at Dictionary.com
1830, from French antipathique; see antipathy + -ic. It tends to be used in medicine in place of antipathetic.
antipathy (n.) Look up antipathy at Dictionary.com
c. 1600, from Latin antipathia, from Greek antipatheia, noun of state from antipathes "opposed in feeling, having opposite feeling; in return for suffering; felt mutually," from anti- "against" (see anti-) + root of pathos "feeling" (see pathos).
antiperspirant (adj.) Look up antiperspirant at Dictionary.com
by 1946, from anti- + perspire + adjectival suffix -ant.
antiphon (n.) Look up antiphon at Dictionary.com
c. 1500, "a versicle sung responsively," from Middle French antiphone "hymn" or directly from Medieval Latin antiphona, from Greek antiphona, from anti- "over against" (see anti-) + phone "voice," from PIE root *bha- (2) "to speak, tell, say" (see fame (n.)). A re-adoption of the word which had become anthem in English and lost its original meaning.
antiphonal (adj.) Look up antiphonal at Dictionary.com
1719, from antiphon + -al. Related: Antiphonally.
antiphony (n.) Look up antiphony at Dictionary.com
1590s, from Greek antiphonos (see antiphon) + -y (1).
antiphrasis (n.) Look up antiphrasis at Dictionary.com
1530s, from Latin antiphrasis, from Greek antiphrasis, from antiphrazein "to express (something) by the opposite," from anti- (see anti-) + phrazein "to consider, to express" (see phrase (n.)).
antipodes (n.) Look up antipodes at Dictionary.com
late 14c., "persons who dwell on the opposite side of the globe;" 1540s as "place on the opposite side of the earth," from Latin antipodes "those who dwell on the opposite side of the earth," from Greek antipodes, plural of antipous "with feet opposite (ours)," from anti- "opposite" (see anti-) + pous "foot," from PIE root *ped- (1) "a foot" (see foot (n.)); thus, people who live on the opposite side of the world.
Yonde in Ethiopia ben the Antipodes, men that haue theyr fete ayenst our fete. ["De Proprietatibus Rerum Bartholomeus Anglicus," translated by John of Trevisa, 1398]
Not to be confused with antiscii "those who live on the same meridian on opposite side of the equator," whose shadows fall at noon in the opposite direction, from Greek anti- + skia "shadow." Related: Antipodal (adj.); antipodean (1630s, n.; 1650s, adj.).
antipope (n.) Look up antipope at Dictionary.com
also anti-pope, early 15c. (mid-13c. in Anglo-Latin), from Medieval Latin antipapa, from Greek anti- "against" (see anti-) + papa (see pope).
antipyretic Look up antipyretic at Dictionary.com
"reducing fever; that which reduces fever," 1680s, from anti- + Greek pyretos "fever, burning heat," related to pyr "fire," from PIE root *paəwr- "fire" (see fire (n.)) + -ic.
antiquarian (n.) Look up antiquarian at Dictionary.com
"one who studies or is fond of antiquities," c. 1600, from Latin antiquarius "pertaining to antiquity," from antiquus (see antique (adj.)) + -an. As an adjective from 1771.
antiquated (adj.) Look up antiquated at Dictionary.com
1620s, past participle adjective from antiquate (1530s) "to make old or obsolete," from Latin antiquatus, past participle of antiquare (see antique (adj.)). An older adjective in the same sense was antiquate (early 15c.), from Latin.
antiquation (n.) Look up antiquation at Dictionary.com
1640s, from Late Latin antiquationem (nominative antiquatio), noun of action from past participle stem of antiquare (see antique (adj.)).
antique (adj.) Look up antique at Dictionary.com
1530s, "aged, venerable," from Middle French antique "old" (14c.), from Latin antiquus (later anticus) "ancient, former, of olden times; old, long in existence, aged; venerable; old-fashioned," from PIE *anti in sense of "before" (see ante) + *okw- "appearance" (see eye (n.)). Originally pronounced in English like its parallel antic, but French pronunciation and spelling were adopted from c. 1700.
antique (n.) Look up antique at Dictionary.com
"an old and collectible thing," 1771, from antique (adj.).
antique (v.) Look up antique at Dictionary.com
"to give an antique appearance to," 1896, from antique (adj.). Related: Antiqued; antiquing.
antiquity (n.) Look up antiquity at Dictionary.com
late 14c., "olden times," from Old French antiquitet (11c.; Modern French antiquité) "olden times; great age; old age," from Latin antiquitatem (nominative antiquitas) "ancient times, antiquity, venerableness," noun of quality from antiquus (see antique (adj.)). Specific reference to ancient Greece and Rome is from mid-15c.; meaning "quality of being old" is from about the same time. Antiquities "relics of ancient days" is from 1510s.
antiscorbutic (n.) Look up antiscorbutic at Dictionary.com
also anti-scorbutic, 1690s, from anti- + Modern Latin scorbutus "scurvy" (see scorbutic). From 1725 as an adjective.
antiseptic (adj.) Look up antiseptic at Dictionary.com
1750, coined from anti- "against" + septic. Figurative use by 1820. As a noun meaning "an antiseptic substance" by 1803.
antistrophe (n.) Look up antistrophe at Dictionary.com
c. 1600, from Latin, from Greek antistrophe "a turning about, a turning back," from antistrephein, from anti- "against" (see anti-) + strephein "to turn" (see strophe).
antitheism (n.) Look up antitheism at Dictionary.com
also anti-theism, 1788; see anti- + theism.
antitheist (n.) Look up antitheist at Dictionary.com
also anti-theist, "one opposed to belief in the existence of a god," 1813; see anti- + theist. Related: Antitheistic.
antitheses (n.) Look up antitheses at Dictionary.com
plural of antithesis.
antithesis (n.) Look up antithesis at Dictionary.com
1520s, from Late Latin antithesis, from Greek antithesis "opposition, resistance," literally "a placing against," also a term in logic and rhetoric, noun of action from antitithenai "to set against, oppose," a term in logic, from anti- "against" (see anti-) + tithenai "to put, place" (see theme).
antithetic (adj.) Look up antithetic at Dictionary.com
"containing an antithesis," c. 1600, from Greek antithetikos "setting in opposition," from antithetos "placed in opposition," from antithesis (see antithesis).
antithetical (adj.) Look up antithetical at Dictionary.com
1580s, from Greek antithetikos "setting in opposition," from antithetos "placed in opposition" (see antithetic) + -al (1). Related: Antithetically.
antitoxic Look up antitoxic at Dictionary.com
1860 (n.); 1862 (adj.), from anti- + toxic.
antitoxin (n.) Look up antitoxin at Dictionary.com
"substance neutralizing poisons," 1892, from anti- + toxin. Coined in 1890 by German bacteriologist Emil von Behring (1854-1917). Antitoxic in this sense is from 1860.
antitrust (adj.) Look up antitrust at Dictionary.com
also anti-trust, 1890, U.S., from anti- + trust (n.) in the economic monopoly sense.
antitype (n.) Look up antitype at Dictionary.com
also anti-type, 1610s, from Greek antitypos "corresponding in form," literally "struck back, responding as an impression to a die," from anti- (see anti-) + typos "a blow, mark" (see type (n.)).
antivenin (n.) Look up antivenin at Dictionary.com
1894, from anti- + venin, from venom + chemical suffix -in (2). Perhaps immediately from French antivenin.