/ Dictionary / Index A accustom: Meaning and Definition of Find definitions for: ac•cus•tom Pronunciation: (u-kus'tum), [key] — v.t. to familiarize by custom or use; habituate: to accustom oneself to cold weather. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: accustom (Thesaurus) accuser accustomed Related Content Daily Word Quiz: prostrate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language