一切經音義 9.203

9.203

衰耄（字體作𤸬同所龜反說文𤸬減也禮記年五十始衰衰懈也下古文毫二形今作耗同莫報反禮記八十曰耄注云耄惛忘也亦亂也）。

衰耄 (the character form is written as 𤸬, the same, fanqie: 所 + 龜. The Shuowen says: '𤸬 means to diminish'. The Liji says: 'At fifty years of age, one begins to decline (衰); 衰 means to slacken'. The second character has the two ancient forms 毫; now written as 耗, the same, fanqie: 莫 + 報. The Liji says: 'Eighty is called 耄'. The commentary says: '耄 means confused and forgetful; it also means disordered').