- a prefix meaning “against,” “opposite of,” “antiparticle of,” used in the formation of compound words (anticline); used freely in combination with elements of any origin (antibody; antifreeze; antiknock; antilepton).
Origin of anti-
Examples from the Web for anti-
But, in theory, the minute she announces, unauthorized PACs, whether pro- or anti-, will need to chop her name from their titles.Hillary’s SuperPAC War Proves Yet Again That Campaign Finance Needs a Fix
January 28, 2014
Pro pay for performance, anti-"take whatever you want" healthcare.A Young Republican Looks Forward
November 13, 2012
Finally, and most importantly, Conservatives need to drop the anti- State rhetoric.'Does He Care About People Like Me?'
November 12, 2012
- against; opposinganticlerical; antisocial
- opposite toanticlimax; antimere
- rival; falseantipope
- counteracting, inhibiting, or neutralizingantifreeze; antihistamine
- designating the antiparticle of the particle specifiedantineutron
Word Origin and History for anti-
word-forming element meaning "against, opposed to, opposite of, instead," from Old French anti- and directly from Latin anti-, from Greek anti "against, opposite, instead of," also used as a prefix, from PIE *anti "against," also "in front of" (see ante). It appears in some words in Middle English but was not commonly used in word formations until modern times.
- Opposing; against:antisocial.
- Counteracting; neutralizing:antibody.
- A prefix whose basic meaning is against. It is used to form adjectives that mean counteracting (such as antiseptic, preventing infection). It is also used to form nouns referring to substances that counteract other substances (such as antihistamine, a substance counteracting histamine), and nouns meaning something that displays opposite, reverse, or inverse characteristics of something else (such as anticyclone, a storm that circulates in the opposite direction from a cyclone). Before a vowel it becomes ant-, as in antacid.