First-class
First-class adjective - Of the very best kind.
Main and first-class are semantically related. In some cases you can use "Main" instead an adjective phrase "First-class".
Main
Main adjective - Coming before all others in importance.
First-class and main are semantically related. Sometimes you can use "First-class" instead an adjective "Main".
Mutual synonyms
Cite this Source
Main and First-class. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/first-class/main
First-class & Main. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/first-class/main>.
Main or First-class. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/first-class/main.