Synonyms of faulty

Adjective

1. defective, faulty, imperfect (vs. perfect)

usage: having a defect; "I returned the appliance because it was defective"

2. faulty, incorrect, wrong, inaccurate (vs. accurate)

usage: characterized by errors; not agreeing with a model or not following established rules; "he submitted a faulty report"; "an incorrect transcription"; the wrong side of the road"

Definition and meaning of faulty (Dictionary)