Improper and Low-down

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

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

Nearby Word: improperly

Low-down adjective - Not following or in accordance with standards of honor and decency.

Improper and low-down are semantically related in immoral topic. Sometimes you can use "Improper" instead an adjective phrase "Low-down", if it concerns topics such as cheap.