/ Dictionary / Index I illegitimize: Meaning and Definition of Find definitions for: il•le•git•i•mize Pronunciation: (il-i-jit'u-mīz"), [key] — -mized, -miz•ing. illegitimatize. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. illegitimatize ill-equipped 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