/ Dictionary / Index U undesigned: Meaning and Definition of Find definitions for: un•de•signed Pronunciation: (un"di-zīnd'), [key] — adj. not planned beforehand; unpremeditated; unintentional. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undesigned (Thesaurus) underwrote undesigning 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