Improper and Illicit

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

Illicit and improper are semantically related in unlawful topic. In some cases you can use "Illicit" instead an adjective "Improper".

Nearby Word: improperly

Illicit adjective - Contrary to or forbidden by law.

Improper and illicit are semantically related in forbidden topic. Sometimes you can use "Improper" instead an adjective "Illicit", if it concerns topics such as unlawful.

Nearby Word: illicitly