Breadcrumb Home > Dictionary > Index S stum: Meaning and Definition of Find definitions for: stum Pronunciation: (stum), [key] — n., v., stummed, stum•ming. —n. unfermented or partly fermented grape juice. wine in which increased fermentation has taken place because of the addition of stum. —v.t. to increase the fermentation of (wine) by adding stum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stultify stumble TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: praedial Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language