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. In some cases you can use "Invalid" instead an adjective "Infirm", when it comes to topics like bedridden.
Nearby Word: infirmity
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. You can use "Infirm" instead an adjective "Invalid", if it concerns topics such as sickly, bedridden, disabled.
Mutual synonyms
Cite this Source
Invalid and Infirm. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/infirm/invalid
Infirm & Invalid. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/infirm/invalid>.
Invalid or Infirm. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/infirm/invalid.
Google Ngram Viewer shows how "infirm" and "invalid" have occurred on timeline