umpteenthEnglish → ChineseOxford English–Chineseumpteenth /BrE ʌmpˈtiːnθ , AmE ˌəm(p)ˈtinθ / adjective informal 第无数个的 ‹item, person, idea›; for the umpteenth time, I don't know! 我说过无数次了,我不知道!