/ Dictionary / Index S spur-of-the-moment: Meaning and Definition of Find definitions for: spur-of-the-mo•ment Pronunciation: (spûr'uv-u-mō'munt), [key] — adj. occurring or done without advance preparation or deliberation; extemporaneous; unplanned: a spur-of-the-moment decision. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spur-of-the-moment (Thesaurus) spurn spurred Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language