/ Dictionary / Index P presumptuous: Meaning and Definition of Find definitions for: pre•sump•tu•ous Pronunciation: (pri-zump'ch-us), [key] — adj. full of, characterized by, or showing presumption or readiness to presume in conduct or thought. unwarrantedly or impertinently bold; forward. presumptive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: presumptuous (Thesaurus) presumptive heir presuppose Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language