/ Dictionary / Index A aren't: Meaning and Definition of Find definitions for: aren't Pronunciation: (ärnt, är'unt), [key] contraction of are not. contraction of am not (used interrogatively). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Arensky areo- Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language