KanjiJLPT N3
Closed

closed, shut

Mnemonic

A genius sprints toward the gate, but it's already closed. He skids to a halt, pressing his palms against the cold iron bars. Even a genius can't outsmart a closed gate. He slumps down, scribbling equations in the dirt, but no formula will pry it open tonight.
Additional thoughts
Imagine a desperate genius arriving just as a massive iron gate slams shut in his face. The clang echoes. His brilliance is useless against brute metal—the gate stays sealed. That frustration locks the image in memory.
Quick recall
A genius arrives at the gate already closed—no intellect can pry it open.

Details

The keyword for 閉 is closed. This kanji conveys the idea of shutting, closing, or sealing off an entrance or opening. It implies the act of blocking passage or access, such as closing a door, shutting a gate, or bringing something to an end. The sense extends beyond physical closure to include abstract meanings like concluding an event or shutting oneself off from the outside world.
On'yomi
へい
Kun'yomi
と.じる、と.ざす、し.める、し.まる、た.てる