Webster's Revised Unabridged Dictionary · 1913

Faulty

Faulty , adjective

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. — Shakespeare
The king doth speak... as one which is faulty. — 2 Sam. xiv. 13