Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Non-viable and invalid are semantically related. In some cases you can use "Non-viable" instead an adjective "Invalid".
Non-viable
Invalid and non-viable are semantically related. Sometimes you can use "Invalid" instead an adjective phrase "Non-viable".
Mutual synonyms
Cite this Source
Non-viable and Invalid. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/invalid/non-viable
Invalid & Non-viable. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/invalid/non-viable>.
Non-viable or Invalid. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/invalid/non-viable.