Added 9 October 2026 first-class adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about first-class at Wordnik → Where our words come from → Very good; of the highest quality. made an excellent speech Related Words: excellentsuperiorbeautifulbest-of-breedclasscopyeminentfirstfirst-degreefirst-orderfirst-rategrade Back to today's word