/ Dictionary / Index W whilom: Meaning and Definition of Find definitions for: whi•lom Pronunciation: (hwī'lum, wī'-), [key] — Archaic. Archaic. —adj. former; erstwhile: whilom friends. —adv. at one time. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. whillikers whilst 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