Improper and Ill-conceived

Improper adjective - Not appropriate for a particular occasion or situation.

Ill-conceived and improper are semantically related. In some cases you can use "Ill-conceived" instead an adjective "Improper".

Nearby Word: improperly

Ill-conceived adjective - Poorly conceived or thought out.

Improper and ill-conceived are semantically related. Sometimes you can use "Improper" instead an adjective phrase "Ill-conceived".