Deficient
Rarer
Deficient and rarer are semantically related in exceptional topic. Sometimes you can use "Deficient" instead an adjective "Rarer".
Cite this Source
Rarer and Deficient. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deficient/rarer
Deficient & Rarer. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deficient/rarer>.
Rarer or Deficient. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deficient/rarer.
Google Ngram Viewer shows how "deficient" and "rarer" have occurred on timeline