/ Dictionary / Index I impassive: Meaning and Definition of Find definitions for: im•pas•sive Pronunciation: (im-pas'iv), [key] — adj. without emotion; apathetic; unmoved. calm; serene. unconscious; insensible. not subject to suffering. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: impassive (Thesaurus) impassioned impaste 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