Customary and First class

Customary

Customary adjective - Accepted, used, or practiced by most people.

First class is an antonym for customary.

Nearby Words: custom, customarily

First class

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

Customary is an antonym for first class in wonderful topic.
Cite this Source
First class and Customary. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/customary/first_class
Customary & First class. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/customary/first_class>.
First class or Customary. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/customary/first_class.
Google Ngram Viewer shows how "customary" and "first class" have occurred on timeline