KanjiJLPT N1
Crush

crush, smash, break, dissipate

Mnemonic

A violent storm slams into a vault of precious diamonds with such force that it begins to crush every gem into glittering powder. The storm's pressure is relentless—nothing precious survives; everything is reduced to dust.
Additional thoughts
Picture howling winds crushing diamonds—the hardest substance—into fine powder. If a storm can crush something precious, it can crush absolutely anything. The image of shattered jewels flying in a cyclone is hard to forget.
Quick recall
A storm Crushes precious diamonds into dust.

Details

The keyword for 潰 is crush. This kanji refers to the act of smashing, breaking down, or destroying something by applying pressure, reducing it to a flattened or ruined state. It can describe both physical crushing, such as squashing an object, and more abstract uses like the collapse or ruin of an organization, plan, or one's composure. It also carries the medical sense of an ulcer or festering wound, where tissue breaks down and deteriorates.
On'yomi
かい、え
Kun'yomi
つぶ.す、つぶ.れる、つい.える