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anti

[an-tahy, an-tee] /ˈæn taɪ, ˈæn ti/
noun, plural antis.
1.
a person who is opposed to a particular practice, party, policy, action, etc.
Origin
1780-1790
1780-90; by shortening of words prefixed with anti-

anti-

1.
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).
Also, before a vowel, ant-.
Origin
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
Can be confused
ante, ante-, anti-, auntie.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for anti
  • anti matter is, the same matter existing in different moments of time.
British Dictionary definitions for anti

anti

/ˈæntɪ/
adjective
1.
opposed to a party, policy, attitude, etc: he won't join because he is rather anti
noun
2.
an opponent of a party, policy, etc

anti-

prefix
1.
against; opposing: anticlerical, antisocial
2.
opposite to: anticlimax, antimere
3.
rival; false: antipope
4.
counteracting, inhibiting, or neutralizing: antifreeze, antihistamine
5.
designating the antiparticle of the particle specified: antineutron
Word Origin
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
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Word Origin and History for anti
n.

as a stand-alone word, attested from 1788, originally in reference to the anti-federalists in U.S. politics (in the 1830s, of the Anti-Masonic party); as an adjective, from 1857. From anti- in various usages.

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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anti in Medicine

anti- or ant-
pref.

  1. Opposite: antimere.

  2. Opposing; against: antisocial.

  3. Counteracting; neutralizing: antibody.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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anti in Science
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for anti

anti

noun

A person opposed to a particular plan, position, action, etc: The vote showed three pros and six antis


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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