Synonyms for faulty

imperfect, defective, flawed, blemished, deficient, impaired, malformed, distorted, weak, tainted, debased, adulterated, leaky, seamed, damaged, incomplete, awry, amiss, unsound, spotted, cracked, warped, lame, maimed, crazy, sprung, injured, broken, wounded, hurt, worn, battered, frail, crude, botched, insufficient, inadequate, incomplete, found wanting, out of order, below par, incorrect, erroneous, unfit, substandard; see also unsatisfactory, wrong 2.

Antonyms whole*, perfect, unimpaired.