unfailing Antonyms

changed greatly slippery reckless questionable mutable maggoty labile irresponsible irregular instable inconstant impermanent frail uncertain unreliable not perfect at Death's door undependable unpredictable unsure fault-prone error-prone barfy untrustworthy weak untrue unsound flimsy flighty diseased discursive deniable decrepit debilitated crook chucking changeable capricious bedridden apathetic anthropological dizzy doubtful flawed fickle feverish feeble fallible faithless failing