Inept

Part of speech: adjective (a.)

1. Not apt or fit; unfit; unsuitable; improper; unbecoming. The Aristotelian philosophy is inept for new discoveries. Glanvill.

2. Silly; useless; nonsensical; absurd; foolish. To view attention as a special act of intelligence, and to distinguish it from consciousness, is utterly inept. Sir W. Hamilton.