Find Synonyms
unlawful Synonyms
Another word for unlawful
Choosing another word for unlawful depends on context, so the 13 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
• adjective (Context 1)
Not conforming to, permitted by, or recognized by law or rules.
Usage Example
"The court ruled that the company's sudden termination of the contract was illegal."
Strongest
illegal
illicit
Strong
illegitimate
prohibited
forbidden
unauthorized
outlawed
banned
criminal
felonious
• adjective (Context 2)
Born to parents who are not married to each other (archaic or formal).
Usage Example
"In the nineteenth-century novel, the estate was denied to the nobleman's illegitimate heir."
Strongest
illegitimate
Strong
natural
baseborn
misbegotten
Opposites of unlawful
The opposite of unlawful shifts depending on context. Common opposites include:
legitimate
lawful
legal
licit
permissible
authorized
sanctioned
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Unlawful. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/unlawful