Auxiliary and Indispensable

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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Indispensable is an antonym for auxiliary.

Indispensable adjective - Impossible to do without.

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Auxiliary is an antonym for indispensable in necessary topic.

Nearby Word: indispensably

Cite this Source

Indispensable and Auxiliary. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/auxiliary/indispensable

Auxiliary & Indispensable. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/auxiliary/indispensable>.

Indispensable or Auxiliary. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/auxiliary/indispensable.

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