KanjiJLPT N1
Decline

decline, wane, weaken

Mnemonic

A king's hat bleaches under the merciless sun while his royal sneakers crumble apart—his entire reign is in decline. Each day the sun fades the hat further, and every weary step grinds the sneakers thinner. Power, glory, vitality—all slowly withering away.
Additional thoughts
Picture a crumbling throne room: the crown/hat sun-bleached on top, the harsh sun blazing in the middle, tattered sneakers at the bottom—the vertical layout mirrors the kanji 衰 itself. Top to bottom decay.
Quick recall
A king's hat bleached by the sun, sneakers crumbling—everything in decline.

Details

The keyword for 衰 is decline. This kanji refers to the process of weakening, waning, or deteriorating over time. It encompasses both physical and abstract forms of decline, such as the fading of one's health, vitality, or power. The character conveys a sense of gradual loss or diminishment from a former state of strength or prosperity.
On'yomi
すい
Kun'yomi
おとろ.える