Deficient and Weak

Deficient

Deficient adjective - Lacking some necessary part.

Weak is a synonym for deficient in property topic. In some cases you can use "Weak" instead an adjective "Deficient", when it comes to topics like imperfect, defective, unsatisfactory.

Nearby Words: deficiency, deficit, deficiently

Weak

Weak adjective - Lacking bodily strength.

Deficient is a synonym for weak in defective topic. Sometimes you can use "Deficient" instead an adjective "Weak".

Cite this Source
Weak and Deficient. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deficient/weak
Deficient & Weak. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deficient/weak>.
Weak or Deficient. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deficient/weak.
Google Ngram Viewer shows how "deficient" and "weak" have occurred on timeline