/ Dictionary / Index I idiotism: Meaning and Definition of Find definitions for: id•i•ot•ism Pronunciation: (id'ē-u-tiz"um), [key] — n. idiotic conduct or action. idiocy. id•i•ot•ism Pronunciation: (id'ē-u-tiz"um), [key] — n. Obs. an idiom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. idiotic idiotize Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language