Decline/Weaken as Prefix
In these words, 衰 acts as a prefix meaning 'decline', 'weaken', or 'deteriorate', forming compounds that describe various aspects of decline.
衰老 • shuāi lǎo • grow old; deteriorate with age • HSK 6
HSK 6
shuāi衰
lǎo老
grow old; deteriorate with age

