Duff and Inadequate

Duff noun - The part of the body upon which someone sits.

Inadequate and duff are semantically related. In some cases you can use "Inadequate" instead an adjective "Duff".

Nearby Word: duffer

Inadequate adjective - Not coming up to an expected measure or meeting a particular need.

Duff and inadequate are semantically related. (British) Sometimes you can use "Duff" instead an adjective "Inadequate". informal substitute

Nearby Words: inadequacy, inadequately