/ Dictionary / Index U undertenant: Meaning and Definition of Find definitions for: un•der•ten•ant Pronunciation: (un'dur-ten"unt), [key] — n. a subtenant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. undertaking under-the-counter Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language