/ Dictionary / Index P presuming: Meaning and Definition of Find definitions for: pre•sum•ing Pronunciation: (pri-z'ming), [key] — adj. presumptuous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: presuming (Thesaurus) presume presumption Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language