/ Dictionary / Index U undersexed: Meaning and Definition of Find definitions for: un•der•sexed Pronunciation: (un"dur-sekst'), [key] — adj. having a weaker sexual drive than is considered usual or normal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undersexed (Thesaurus) underset undersheriff Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language