Faulty

faulty adj.

Non-functional; buggy. Same denotation as bletcherous, losing, q.v., but the connotation is much milder.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.

Fault"y (?), a.

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.

© Webster 1913.