Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Unallowable and invalid are semantically related. In some cases you can use "Unallowable" instead an adjective "Invalid".
Unallowable
Invalid and unallowable are semantically related. Sometimes you can use "Invalid" instead an adjective "Unallowable".
Nearby Word: unallowed
Mutual synonyms
Cite this Source
Unallowable and Invalid. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/invalid/unallowable
Invalid & Unallowable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/invalid/unallowable>.
Unallowable or Invalid. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/invalid/unallowable.
Google Ngram Viewer shows how "invalid" and "unallowable" have occurred on timeline