Licentious
1. Lacking moral discipline or ignoring legal restraint, especially in sexual conduct; lascivious.
2. Going beyond customary or proper bounds or limits; disregarding rules.
3. Archaic: disregarding accepted rules or conventions, esp. in grammar or literary style.
How I encountered this word:
I read, therefore I learn…
Licentious has been my favourite word for years.
Along with Salacious.