/ Dictionary / Index F faultless: Meaning and Definition of Find definitions for: fault•less Pronunciation: (fôlt'lis), [key] — adj. without fault, flaw, or defect; perfect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: faultless (Thesaurus) faultfinding fault line Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language