Needful and Supplementary

Opposite meaning words

Needful

Needful adjective - Impossible to do without.
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Synonyms for Needful
Antonyms for Needful
Supplementary is an antonym for needful.
Nearby Words: need, needed, needy, needfully

Supplementary

Supplementary adjective - Available to supply something extra when needed.
Usage example: the teacher's edition of the textbook comes with a lot of supplementary material
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Synonyms for Supplementary
Antonyms for Supplementary
Needful is an antonym for supplementary.
Nearby Words: supplement, supplemental, supplemented, supplementation
Similar words of needful

Similar words of supplementary
Cite this Source
Supplementary and Needful. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/needful/supplementary
Needful & Supplementary. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/needful/supplementary>.
Supplementary or Needful. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/needful/supplementary.

Antonyms for needful


Antonyms for supplementary

Google Ngram Viewer shows how "needful" and "supplementary" have occurred on timeline