A designation indicating that the language or scenes, etc. of a media or live production may be offensive: X-rated language is heard too often on certain talk-show programs and it interferes with the listener's concentration on whatever viewpoint the vulgar speaker is trying to present.

Primarily a reference to a movie which is considered not suitable to be seen by people under the age of 17 in the U.S. and under 18 in the United Kingdom because of violence, offensive language, or sexual activity.