衰弱
shuāi ruò · HSK 7
weak
🪫🍂 衰 = decline/wither + 弱 = weak; together: declined to a weak, feeble state
衰 carries the sense of decline or withering (as in 衰老, aging), and 弱 is the plain word for weak. Stack them and you get a body or system that has declined into feebleness. Shuāi ruò sounds a bit like why-wretched.
弱 — two 弓 (bows) + two 彡 (feathers/strokes)
Originally depicted two bent bows with drooping feathers or fine hairs, suggesting something pliant and weak. The doubled 弓 emphasizes flexibility, while 彡 evokes delicate, thin strands. The image of a soft, bending bow extended to mean 'weak,' 'frail,' or 'young.'