Invalid
Invalid adjective - Chronically or repeatedly suffering from poor health.
Usage example: an old and now invalid woman who rarely gets out anymore
Infirm is a synonym for invalid in feeling topic. In some cases you can use "Infirm" instead an adjective "Invalid", when it comes to topics like sickly, bedridden, disabled.
Infirm
Infirm adjective - Lacking bodily strength.
Usage example: the elderly and infirm have to be especially careful during the winter months
Invalid is a synonym for infirm in feeling topic. You can use "Invalid" instead an adjective "Infirm", if it concerns topics such as bedridden.
Nearby Word: infirmity
Mutual synonyms
Cite this Source
Infirm and Invalid. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/invalid/infirm
Invalid & Infirm. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/invalid/infirm>.
Infirm or Invalid. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/invalid/infirm.
Google Ngram Viewer shows how "invalid" and "infirm" have occurred on timeline