Feeblest
Failing and feeblest are semantically related. in not strong topic. In some cases you can use "Failing" instead an adjective "Feeblest".
Mutual synonyms
Cite this Source
Failing and Feeblest. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/feeblest/failing
Feeblest & Failing. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/feeblest/failing>.
Failing or Feeblest. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/feeblest/failing.
Google Ngram Viewer shows how "feeblest" and "failing" have occurred on timeline