/ Dictionary / Index S sum-up: Meaning and Definition of Find definitions for: sum-up Pronunciation: (sum'up"), [key] — n. the act or result of summing up; summary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sum-up (Thesaurus) sum total Sumy Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language