/ Dictionary / Index S subtile: Meaning and Definition of Find definitions for: sub•tile Pronunciation: (sut'l, sub'til), [key] — -til•er, -til•est. subtle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subthreshold subtilisin 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