KanjiJLPT N4
Decide

decide, fix, agree upon, appoint

Mnemonic

A violent storm barrels toward the building. An office worker stares out the window—stay and finish the report, or evacuate now? She must decide. The storm rattles the glass. She slams her laptop shut, grabs her coat, and commits. No second-guessing. That's how you decide—with absolute finality.
Additional thoughts
Visualize the office worker frozen at her desk as dark clouds swirl outside, then the decisive moment she slams the laptop and acts. The storm creates urgency that forces a clear, irreversible choice—no lingering doubt.
Quick recall
A storm forces the office worker to decide—stay or go—with total finality.

Details

The keyword for 決 is decide. This kanji conveys the act of making a firm determination or settling a matter conclusively. It carries the sense of resolving something with finality, cutting off other possibilities to arrive at a clear conclusion. It is used broadly in contexts involving judgment, resolution, and the definitive settling of outcomes.
On'yomi
けつ
Kun'yomi
き.める、-ぎ.め、き.まる、さ.く