/ Dictionary / Index A aginner: Meaning and Definition of Find definitions for: a•gin•ner Pronunciation: (u-gin'ur), [key] — n. Informal. a person who opposes a plan, proposed legislation, or any drastic change: He won the election by appealing to the aginners. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Agincourt agio Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language