/ Dictionary / Index A antifeedant: Meaning and Definition of Find definitions for: an•ti•feed•ant Pronunciation: (an"tē-fēd'nt, an"tī-), [key] — n. a chemical agent that causes a pest, as an insect, to stop eating. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Antifederal party antiferromagnet Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language