Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Unvindicable and invalid are semantically related. In some cases you can use "Unvindicable" instead an adjective "Invalid".
Unvindicable
Invalid and unvindicable are semantically related. You can use "Invalid" instead an adjective "Unvindicable".
Mutual synonyms
Cite this Source
Unvindicable and Invalid. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/invalid/unvindicable
Invalid & Unvindicable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/invalid/unvindicable>.
Unvindicable or Invalid. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/invalid/unvindicable.
Google Ngram Viewer shows how "invalid" and "unvindicable" have occurred on timeline