First class and Inessential

Opposite meaning terms

First class noun - Mail that includes letters and postcards and packages sealed against inspection.

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Inessential is an antonym for first class in highest in importance topic.

Inessential adjective - Not needed by the circumstances or to accomplish an end.

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First class is an antonym for inessential.

Cite this Source

Inessential and First class. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/first_class/inessential

First class & Inessential. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/first_class/inessential>.

Inessential or First class. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/first_class/inessential.

Google Ngram Viewer shows how "first class" and "inessential" have occurred on timeline