/ Dictionary / Index S suicidal: Meaning and Definition of Find definitions for: su•i•cid•al Pronunciation: (s"u-sīd'l), [key] — adj. pertaining to, involving, or suggesting suicide. tending or leading to suicide. foolishly or rashly dangerous: He drives at a suicidal speed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: suicidal (Thesaurus) Sui suicide 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