/ Dictionary / Index N nervous exhaustion: Meaning and Definition of Find definitions for: nerv'ous exhaus'tion Pronunciation: [key] extreme mental and physical fatigue caused by excessive emotional stress; neurasthenia. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nervous breakdown nervous Nellie Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language