/ Dictionary / Index U undeveloped: Meaning and Definition of Find definitions for: un•de•vel•oped Pronunciation: (un"di-vel'upt), [key] — adj. not developed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undeveloped (Thesaurus) undesirable discharge undid Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language