Faulty

wrong bad false imperfect inaccurate defective flawed damaged broken unsound invalid out of order malfunctioning impaired deficient incomplete inadequate insufficient unreliable weak injured blemished tainted distorted erroneous fallacious fallible inexact lame frail warped adulterated amiss awry botched cracked debased below par maimed marred unfit leaky lemon blamable malformed rank sick unretentive