performant Antonyms

for nothing testifier teemless synod swearer successless stander-by spyglass spotter spectatrix spectatress sleeveless signatory session senate uncapable unfruitful watcher nonproductive nonparticipant menopausal manque nonfunctional rubbernecker moviegoer gawker boondoggle kibitzer spectator sport turnout looker-on witnesser seer rewardless faultful eyewitness earwitness deponent defeasible contemplator conclave cojuror clapper bouse bootless beholder attestor attester functionless gainless