Deficient
Deficient adjective - Lacking some necessary part.
Exceptional and deficient are semantically related. In some cases you can use "Exceptional" instead an adjective "Deficient".
Exceptional
Exceptional adjective - Being out of the ordinary.
Deficient and exceptional are semantically related. Sometimes you can use "Deficient" instead an adjective "Exceptional".
Mutual synonyms
Cite this Source
Exceptional and Deficient. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deficient/exceptional
Deficient & Exceptional. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deficient/exceptional>.
Exceptional or Deficient. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deficient/exceptional.
Google Ngram Viewer shows how "deficient" and "exceptional" have occurred on timeline