Unconstitutional antonyms

What is the opposite word for Unconstitutional?

Antonyms for unconstitutional
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Definitions of Unconstitutional
Unconstitutional Synonyms
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unconstitutionally
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Antonyms for Unconstitutional. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/antonyms/unconstitutional
Antonyms for Unconstitutional. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/antonyms/unconstitutional>.
Antonyms for Unconstitutional. 2016. Accessed August 15, 2026. https://thesaurus.plus/antonyms/unconstitutional.