/ Dictionary / Index I imbecilic: Meaning and Definition of Find definitions for: im•be•cil•ic Pronunciation: (im"bu-sil'ik), [key] — adj. of, pertaining to, or characteristic of an imbecile. contemptibly stupid, silly, or inappropriate: an imbecilic suggestion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: imbecilic (Thesaurus) imbecile imbecility Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language