/ Dictionary / Index U upswell: Meaning and Definition of Find definitions for: up•swell Pronunciation: (up-swel'), [key] — -swelled, -swelled -swol•len, -swell•ing. to swell up. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. upsweep upswept Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language