/ Dictionary / Index U unnerve: Meaning and Definition of Find definitions for: un•nerve Pronunciation: (un-nûrv'), [key] — -nerved, -nerv•ing. to deprive of courage, strength, determination, or confidence; upset: Fear unnerved him. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unnerve (Thesaurus) unnecessary unnilhexium 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