bachelor
noun [ C ] uk/ˈbætʃ.əl.ər/ us/ˈbætʃ.əl.ɚ/
独身男子，单身汉
a man who has never married
He remained a bachelor until he was well into his 40s. 他一直到四十好几还是单身。
Sam is a confirmed bachelor (= he is unlikely ever to want to get married). 西蒙是个信守独身主义的人。