/ Dictionary / Index O outset: Meaning and Definition of Find definitions for: out•set Pronunciation: (out'set"), [key] — n. the beginning or start: I wanted to explain the situation at the outset. outsert. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: outset (Thesaurus) outsert outsettlement Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language