First class
First class noun - Mail that includes letters and postcards and packages sealed against inspection.
Least is an antonym for first class in topics: best, superior, excellent, most excellent, highest in importance.
Least
Least adjective - The superlative of `little' that can be used with mass nouns and is usually preceded by `the'; a quantifier meaning smallest in amount or extent or degree.
First class is an antonym for least.
Both terms in one sentence
- X-Men: Apocalypse: Havok is only one of five characters to appear in every entry of the First Class trilogy, but because he's the least developed, he's killed off here.
Source: Sacrificial Lion / Film - In X-Men: Apocalypse, twenty years have passed between X-Men: First Class—the first film in the franchise reboot—and this one, but the returning actors are at least ten years younger than what their characters should be and there is no age makeup in sight.
- In X-Men: Days of Future Past, as a Holocaust survivor living in 2023, he is, at the very least, in his late eighties/early nineties (X-Men: First Class portrayed him as being around ten in 1944).
Cite this Source
Least and First class. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/first_class/least
First class & Least. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/first_class/least>.
Least or First class. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/first_class/least.
Google Ngram Viewer shows how "first class" and "least" have occurred on timeline