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illicit Synonyms
Another word for illicit
Choosing another word for illicit that fits your sentence is easier when synonyms and similar words are paired with an exact adjective definition and ranked by match strength.
• adjective (Context 1)
Forbidden by law, official rules, or established social custom; unlawful or improper.
Usage Example
"Customs officials intercepted a shipment containing illegal goods at the port."
Strongest
illegal
unlawful
forbidden
Strong
prohibited
illegitimate
unauthorized
contraband
under-the-table
clandestine
unsanctioned
Opposites of illicit
The opposite of illicit shifts depending on context. Common opposites include:
licit
lawful
legal
legitimate
permissible
sanctioned
authorized
aboveboard
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Illicit. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/illicit