/ Dictionary / Index I ill-conceived: Meaning and Definition of Find definitions for: ill-con•ceived Pronunciation: (il'kun-sēvd'), [key] — adj. badly conceived or planned: an ill-conceived project. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ill-conceived (Thesaurus) ill-bred ill-conditioned Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language