Invalid and Permissible

Invalid

Invalid noun - Someone who is incapacitated by a chronic illness or injury.

Permissible is an antonym for invalid.

Permissible

Permissible adjective - That may be permitted.

Invalid is an antonym for permissible in impermissible topic.

Cite this Source
Permissible and Invalid. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/invalid/permissible
Invalid & Permissible. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/invalid/permissible>.
Permissible or Invalid. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/invalid/permissible.
Google Ngram Viewer shows how "invalid" and "permissible" have occurred on timeline