Licentious (adjective)

1. Lacking moral discipline or ignoring legal restraint, especially in sexual behavior.
2. Promiscuous, immoral, or dissolute in conduct.

Origin:

From latin licentiosus "disobedient, wanton", from licentia "freedom, license".

Examples:

1. The licentious behavior of the students was a cause for concern for the school administration.
2. The society was shocked by the licentious lifestyle of the famous actor.
3. The novel was banned for its licentious content.
4. Licentious behavior is not acceptable in any civilized society.
5. The licentious actions of the ruler led to the downfall of the kingdom.