Synonyms of faulty in English:

faulty


See definition of faulty

adjective

1‘a faulty electric blanket’

SYNONYMS
malfunctioning, broken, damaged, defective, not working, not functioning, in disrepair, out of order, out of commission, inoperative, unsound, unusable, useless
informal on the blink, on its last legs, kaput, bust, busted, conked out, acting up, playing up, gone haywire, gone phut, done for, wonky, dud
British informal knackered, duff
informal on the fritz
ANTONYMS

working, functioning

2‘her logic is faulty’

SYNONYMS
defective, flawed, unsound, distorted, inaccurate, incorrect, erroneous, imprecise, fallacious, wrong
impaired, weak, invalid
ANTONYMS

sound