KanjiJLPT N1
Stagnate

stagnate, be delayed, overdue, arrears

Mnemonic

A violent storm rips through the valley, hurling branches and mud into the river. The debris wraps around a bridge like a belt, choking the water's path. Everything begins to stagnate — the current dies, filth accumulates, and nothing downstream moves at all.
Additional thoughts
Picture the storm debris forming a tight belt-like band across the river, strangling all flow. The tighter the belt cinches, the more completely everything stagnates. Water darkens and thickens behind the blockage.
Quick recall
A storm wraps debris like a belt around the river, making it stagnate.

Details

The keyword for 滞 is stagnate. This kanji refers to the state of being held up, delayed, or coming to a standstill without flowing or progressing. It conveys the idea of something accumulating or remaining in one place when it should be moving forward, such as water that has stopped flowing or tasks that have piled up without being addressed. It is often used in contexts involving delays, arrears, or congestion where normal movement or progress has been obstructed.
On'yomi
たい、てい
Kun'yomi
とどこお.る