Invalid and Sensible

Invalid

Invalid adjective - Not using or following good reasoning.
Usage example: an argument which has one untrue premise is invalid

Sensible is an antonym for invalid in worthless topic.

Sensible

Sensible adjective - According to the rules of logic.
Usage example: this is the only sensible conclusion

Invalid is an antonym for sensible.

Cite this Source
Sensible and Invalid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/invalid/sensible
Invalid & Sensible. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/invalid/sensible>.
Sensible or Invalid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/invalid/sensible.
Google Ngram Viewer shows how "invalid" and "sensible" have occurred on timeline