/ Dictionary / Index I impetuosity: Meaning and Definition of Find definitions for: im•pet•u•os•i•ty Pronunciation: (im-pech"-os'i-tē), [key] — pl. -ties the quality or condition of being impetuous. an impetuous action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: impetuosity (Thesaurus) impetrate impetuous Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language