illicit
US /ɪˈlɪs.ɪt/
UK /ɪˈlɪs.ɪt/

1.
haram, tidak sah
forbidden by law, rules, or custom
:
•
The police seized a large quantity of illicit drugs.
Polis merampas sejumlah besar dadah haram.
•
They were involved in illicit trade.
Mereka terlibat dalam perdagangan haram.