DEFINITIONS

anti-

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).

Content related to anti-

Is “Anti” Actually An Inclusive Term?It might surprise you to know that the negative anti is being hailed as a more inclusive way to talk about groups facing discrimination.
READ MORE
What does ☮️ - Peace Symbol Emoji mean?Read more in this article about some frequently asked questions and fun facts related to our definitions.
READ MORE

Words nearby anti-

anthroposophy, anthroposphere, anthropozoonosis, anthurium, anti, anti-, anti-abortion, anti-ageing, anti-aircraft, anti-alias, anti-american
Also before a vowel, ant-.

Origin of anti-

Middle English < Latin < Greek, prefixal use of antí; akin to Sanskrit ánti opposite, Latin ante, Middle Dutch ende (> Dutch en and), English an- in answer. Cf. ante-, and

WORDS THAT MAY BE CONFUSED WITH anti-

ante ante- anti- auntie
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for anti-

British Dictionary definitions for anti-

anti-

prefix

against; opposinganticlerical; antisocial
opposite toanticlimax; antimere
rival; falseantipope
counteracting, inhibiting, or neutralizingantifreeze; antihistamine
designating the antiparticle of the particle specifiedantineutron

Word Origin for anti-

from Greek anti
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for anti-

anti-

pref.

Opposite:antimere.
Opposing; against:antisocial.
Counteracting; neutralizing:antibody.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for anti-

anti-

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.