faulty Antonyms

faultless right true truthful unblemished unerring usable valid veracious veridical viable washer working tolerable thorough rigorous running serviceable sodding sound specific strait strict stylistic syntactic syntactical terminological workable right-down right on supercalifragilisticexpialidocious unexpurgated unflawed unreduced unspoiled up and running up to scratch up to the mark able to function functioning properly on the money undamaged on target utilise all right alright allover enamour exacta word-perfect