Find Antonyms

unconstitutional Antonyms

Opposite of unconstitutional

Pinning down the opposite of unconstitutional requires matching its exact sense, so the antonyms and opposite words below are paired with a clear adjective definition and ranked by contrast strength.
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• adjective (Context 1)

Not in accordance with the political constitution of a country or state, or with the procedural rules and bylaws of an organization.

Usage Example

"The Supreme Court ruled that the new censorship law was constitutional because it violated the right to free speech."

Strongest
constitutional
Strong
lawful
legal
legitimate
valid
Weak
authorized

Similar words to unconstitutional

Words similar to unconstitutional shift depending on context. Common synonyms include:

unlawful
illegal
illegitimate
invalid
unauthorized
ultra vires
See all synonyms of unconstitutional

• Nearby Words

unconsidered
unconsoled
unconsolidated
unconstitutional
unconstitutionally
unconstrained
unconstructed

Cite this Entry

Wordmom. (2026). Antonyms for Unconstitutional. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/unconstitutional
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