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