Invalid and Perfect

Opposite meaning words

Invalid adjective - Not being in agreement with what is true.

Usage example: that's an invalid assumption on your part

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Perfect is an antonym for invalid.

Perfect adjective - Being entirely without fault or flaw.

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Invalid is an antonym for perfect.

Cite this Source

Perfect and Invalid. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/invalid/perfect

Invalid & Perfect. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/invalid/perfect>.

Perfect or Invalid. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/invalid/perfect.

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