Illicit
illegal or disapproved of by society:

USE:illicit drugs such as cocaine and cannabis
the illicit trade in stolen vehicles
an illicit love affair


SYNONYMS

• Adulterous,
• black-market*,
• bootleg*,
• clandestine,
• contraband,
• criminal,
• crooked,
• dirty*,
• felonious,
• forbidden,
• furtive,
• guilty,
• hanky-panky,
• heavy*,
• illegal,
• illegitimate,
• immoral,
• improper,
• lawless,
• left-handed,
• prohibited,
• racket,
• unauthorized,
• unlawful,
• unlicensed,
• wildcat,
• wrong,
• wrongful

ANTONYMS

• Legal,
• licit