Synonyms of faulty

1 Syllable

bad, wrong, frail, weak, lame, rank, sick

2 Syllables

falser, subpar, leaky, cracked, kerflooey, false, maimed, lousy, wronging, erring, fluffed, wronger, wrongest, badder, junker, sketchy, awry, broken, flawed, wanting, tainted, leakier, unsound, lemon, wretched, marred, bummed, botched, falsest, sketchier, warped, baddest, vicious, cruddy, way-off, lousier, amiss, slipshod, unfit

3 Syllables

damaged, fallacious, invalid, unbacked, impaired, unthorough, distorted, fallible, incorrect, erroneous, mistaken, blamable, blemished, delinquent, imperfect, injured, inexact, malformed, debased, niggardly, deficient, unpleasing, subnormal

4 Syllables

unreliable, incomplete, deplorable, unfinished, defective, misfigured, malfunctioning, inexpiable, improficient, imprecise, illogical, insufficient, unfulfilled, unassembled, inefficient

5 Syllables

unworkmanlike, bottom-of-barrel, unretentive, unwarrantable, unpersuasive, indefensible, inaccurate, inadequate, adulterated

6 Syllables

counterintuitive, inoperative

7 Syllables

misrepresentative