decrepit

The years between 50 and 70 are the hardest. You are always being asked to do things and yet are not decrepit enough t turn them down.
人生五十歲到七十歲最難熬，人家總愛找你做些事，你又還不到七老八十，不便回絕。

(語出T.S. Eliot, 董橋譯. 載於橄欖香一翦梅)