/ Dictionary / Index U U/W: Meaning and Definition of Find definitions for: U/W Pronunciation: [key] under will. U/w Pronunciation: [key] underwriter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. uvulitis ux. Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language