/ Dictionary / Index W whilst: Meaning and Definition of Find definitions for: whilst Pronunciation: (hwīlst, wīlst), [key] while. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. whilom whim Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language