Webster's Revised Unabridged Dictionary · 1913

Inept

Inept , adjective

[Latin ineptus; prefix. in- not + aptus apt, fit: compare French inepte. Compare Inapt.]

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