Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Not functioning and invalid are semantically related. In some cases you can use "Not functioning" instead an adjective "Invalid".
Not functioning
Invalid and not functioning are semantically related. Sometimes you can use "Invalid" instead an adjective phrase "Not functioning".
Mutual synonyms
Related pairs
- down and invalid
- down and not functioning
- feeble and invalid
- feeble and not functioning
- weak and invalid
- weak and not functioning
- inoperative and invalid
- inoperative and not functioning
- defective and invalid
- defective and not functioning
- useless and invalid
- useless and not functioning
- faulty and invalid
- faulty and not functioning
Cite this Source
Not functioning and Invalid. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/invalid/not_functioning
Invalid & Not functioning. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/invalid/not_functioning>.
Not functioning or Invalid. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/invalid/not_functioning.
Google Ngram Viewer shows how "invalid" and "not functioning" have occurred on timeline