First class and Noxious

Opposite meaning terms

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

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Noxious is an antonym for first class in pleasant topic.

Noxious adjective - Bad for the well-being of the body.

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First class is an antonym for noxious.

Nearby Words: noxiousness, noxiously

Cite this Source

Noxious and First class. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/first_class/noxious

First class & Noxious. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/first_class/noxious>.

Noxious or First class. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/first_class/noxious.

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