About
The character "瘁" is structured with the semantic radical 疒, indicating illness, combined with the phonetic component 卒, which historically informed its pronunciation and contributed a sense of finality or extremity. Etymologically, this formation originally denoted physical or mental weariness, specifically the condition of being overworked to the point of debilitation. Over time, its meaning extended to encompass a more general state of exhaustion or depletion, often used in classical and literary compounds to express severe fatigue or decline.