- characterized by errors
"he submitted a faulty report"

- having a defect
"I returned the appliance because it was defective"

1. Containing faults, blemishes, or defects; imperfect; not fit for the use intended.

"Created once So goodly and erect, though faulty since." -- Milton.

2. Guilty of a fault, or of faults; hence, blamable; worthy of censure. Shak.

"The king doth speak . . . as one which is faulty." -- 2 Sam. xiv. 13.