/ Dictionary / Index U unavailing: Meaning and Definition of Find definitions for: un•a•vail•ing Pronunciation: (un"u-vā'ling), [key] — adj. ineffectual; futile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unavailing (Thesaurus) unau unavoidable Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language