The word 痊愈 is formed through the complementary combination of two characters, each contributing a layer of meaning to the concept of full recovery. The first character, 痊, is composed of the "sickness" radical (疒) alongside the component 全 (quán), which means "complete" or "whole", thus picturing sickness becoming whole. The second character, 愈, incorporates the "heart" radical (心) below 俞 (yú), which conveys a sense of passing through or surpassing. Together, they create a compound where 痊 emphasizes the physical completeness of healing and 愈 adds the dimension of surpassing illness, including a return to mental or emotional well-being, resulting in the holistic meaning of "to recover completely".