faulty faulty /ˈfɔlti/

adjective

1. Characterized by errors; not agreeing with a model or not following established rules  ( faulty , incorrect , wrong )
   characterized by errors; not agreeing with a model or not following established rules
    He submitted a faulty report
   he submitted a faulty report
    An incorrect transcription
   an incorrect transcription
    The wrong side of the road
   the wrong side of the road
   
2. Having a defect  ( faulty , defective )
   having a defect
    I returned the appliance because it was defective
   I returned the appliance because it was defective