Off-color and Undignified

Off-color adjective - Hinting at or intended to call to mind matters regarded as indecent.

Undignified and off-color are semantically related In some cases you can use "Undignified" instead an adjective phrase "Off-color".

Undignified adjective - Lacking dignity.

Off-color and undignified are semantically related in crude topic. Sometimes you can use "Off-color" instead an adjective "Undignified".