Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Unsustainable and invalid are semantically related. In some cases you can use "Unsustainable" instead an adjective "Invalid".
Unsustainable
Invalid and unsustainable are semantically related. Sometimes you can use "Invalid" instead an adjective "Unsustainable".
Mutual synonyms
Related pairs
- wrong and invalid
- wrong and unsustainable
- weak and invalid
- weak and unsustainable
- worthless and invalid
- worthless and unsustainable
- implausible and invalid
- implausible and unsustainable
- illogical and invalid
- illogical and unsustainable
- unconvincing and invalid
- unconvincing and unsustainable
- unsound and invalid
- unsound and unsustainable
Cite this Source
Unsustainable and Invalid. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/invalid/unsustainable
Invalid & Unsustainable. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/invalid/unsustainable>.
Unsustainable or Invalid. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/invalid/unsustainable.
Google Ngram Viewer shows how "invalid" and "unsustainable" have occurred on timeline