Pronunciation: (an'tī, an'tē), [key]
a person who is opposed to a particular practice, party, policy, action, etc.
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-.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.