Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Non-effective and invalid are semantically related. In some cases you can replace phrase "Non-effective" with "Invalid", this terms are similar.
Non-effective
Invalid and non-effective are semantically related. You can use "Invalid" instead an adjective phrase "Non-effective".
Mutual synonyms
Cite this Source
Non-effective and Invalid. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/invalid/non-effective
Invalid & Non-effective. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/invalid/non-effective>.
Non-effective or Invalid. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/invalid/non-effective.