瘁⇒ 鞠躬尽瘁 jūgōngjìncuì, [鞠躬盡瘁], to bend to a task and spare no effort (idiom); striving to the utmost 心力交瘁 xīnlìjiāocuì, to be both mentally and physically exhausted (idiom) 身心交瘁 shēnxīnjiāocuì, worn out in body and soul (idiom) 瘁 cuì, care-worn/distressed/tired/overworked/sick/weary