illicit

US /ɪˈlɪs.ɪt/
UK /ɪˈlɪs.ɪt/
"illicit" picture
1.

forbidden by law, rules, or custom

:
•
The police seized a large quantity of illicit drugs.
•
They were involved in illicit trade.
:
illegalunlawfulforbiddenprohibitedunauthorizedunlicensedbootlegcontrabandclandestinesurreptitious