滞

Kanji: 滞
Level: N1
Meaning: stagnate
On'yomi: タイ
Kun'yomi: とど.まる
Strokes: 13
Common compounds: 滞在 (たいざい) stay 滞納 (たいのう) non-payment
Memory hook: Water (氵) brought to a tower (帯) where it stagnates.