- against; opposing: anticlerical, antisocial
- opposite to: anticlimax, antimere
- rival; false: antipope
- counteracting, inhibiting, or neutralizing: antifreeze, antihistamine
- designating the antiparticle of the particle specified: antineutron
Collins Concise English Dictionary © HarperCollins Publishers::
anti- prefix
an•ti /ˈæntaɪ, ˈænti/USA pronunciation
n. [countable], pl. -tis.
anti-, prefix.
WordReference Random House Unabridged Dictionary of American English © 2026- a person opposed:We have many supporters and a few antis.
anti-, prefix.
an•ti
(an′tī, an′tē),USA pronunciation n., pl. -tis.
anti-,
- a person who is opposed to a particular practice, party, policy, action, etc.
- by shortening of words prefixed with anti- 1780–90
anti-,
- Physics, 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-.
- 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 - Latin
- Middle English
'anti-' also found in these entries (note: many are not synonyms or translations):
AA
- AAA
- ack-ack
- anastrozole
- and
- antagonize
- Antarctic
- anti
- anti-aircraft
- anti-apartheid
- anti-atom
- anticipate
- anti-Communist
- antidote
- antigen
- anti-globalization
- anti-inflammatory
- anti-inflationary
- Anti-Lebanon
- antimacassar
- anti-Nazi
- antinomy
- antinovel
- antipathy
- antiphon
- antipodes
- anti-roll bar
- anti-roman
- antirrhinum
- anti-Semite
- anti-Semitic
- antistrophe
- antithesis
- antitussive
- antivenin
- antonym
- ASBO
- Bekaa
- Blunt
- Bofors gun
- Bright
- community support officer
- curcumin
- depleted uranium
- Dreyfus
- Ferdinand II
- flak
- Free World
- Gardiner
- ADL