Added 9 October 2026 fourth-year adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about fourth-year at Wordnik → Where our words come from → Used of the fourth and final year in United States high school or college. the senior prom Related Words: lastseniorfourthsophomorefreshmanundergraduatefourthsundergraduniversity Back to today's word