Invalid and Just

Opposite meaning words

Invalid adjective - Not using or following good reasoning.

Usage example: an argument which has one untrue premise is invalid

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Just is an antonym for invalid.

Just adjective - Based on sound reasoning or information.

Usage example: there are just reasons for the state's ban of the private use of fireworks

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Invalid is an antonym for just.

Nearby Words: justing, justed

Cite this Source

Just and Invalid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/invalid/just

Invalid & Just. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/invalid/just>.

Just or Invalid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/invalid/just.

Google Ngram Viewer shows how "invalid" and "just" have occurred on timeline