/ Dictionary / Index F foot fault: Meaning and Definition of Find definitions for: foot' fault" Pronunciation: [key] — Tennis. Tennis. a fault consisting in the failure of the server to keep both feet behind the base line until the ball is hit or to keep at least one foot on the ground while hitting the ball. foot•fault Pronunciation: (foot'fôlt"), [key] — v.i. Tennis. to commit a foot fault. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: footfault (Thesaurus) footfall footgear 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