Improper and Under-the-counter

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

Under-the-counter and improper are semantically related In some cases you can use "Under-the-counter" instead an adjective "Improper".

Nearby Word: improperly

Under-the-counter adjective - Done or sold illicitly and secretly;.

Improper and under-the-counter are semantically related in against the law topic. Sometimes you can use "Improper" instead an adjective phrase "Under-the-counter".