/ Dictionary / Index U unmask: Meaning and Definition of Find definitions for: un•mask Pronunciation: (un-mask', -mäsk'), [key] — v.t. to strip a mask or disguise from. to reveal the true character of; disclose; expose. to reveal the presence of (guns) by firing. —v.i. to put off one's mask; appear in true nature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unmask (Thesaurus) unmarked unmeaning Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language