Off-colour and Raunchy

Off-colour adjective - In violation of good taste even verging on the indecent.

Raunchy and off-colour are semantically related. in smutty topic. In some cases you can use "Raunchy" instead an adjective phrase "Off-colour".

Raunchy adjective - Depicting or referring to sexual matters in a way that is unacceptable in polite society.

Off-colour and raunchy are semantically related. Sometimes you can replace phrase "Off-colour" with "Raunchy", this terms are similar.