Auxiliary and Necessary

Opposite meaning words

Auxiliary adjective - Available to supply something extra when needed.

Usage example: the auditorium has an auxiliary cooling system used only on particularly sweltering days

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Necessary is an antonym for auxiliary in supplementary topic.

Necessary adjective - Forcing one's compliance or participation by or as if by law.

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Auxiliary is an antonym for necessary.

Nearby Words: necessity, necessarily

Cite this Source

Necessary and Auxiliary. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/auxiliary/necessary

Auxiliary & Necessary. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/auxiliary/necessary>.

Necessary or Auxiliary. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/auxiliary/necessary.

Google Ngram Viewer shows how "auxiliary" and "necessary" have occurred on timeline