Auxiliary and Fundamental

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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Fundamental is an antonym for auxiliary.

Fundamental adjective - Of or relating to the simplest facts or theories of a subject.

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Auxiliary is an antonym for fundamental in basic topic.

Cite this Source

Fundamental and Auxiliary. (2016). Retrieved 2026, July 20, from https://thesaurus.plus/related/auxiliary/fundamental

Auxiliary & Fundamental. N.p., 2016. Web. 20 Jul. 2026. <https://thesaurus.plus/related/auxiliary/fundamental>.

Fundamental or Auxiliary. 2016. Accessed July 20, 2026. https://thesaurus.plus/related/auxiliary/fundamental.

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