KanjiJLPT N2
Exchange

exchange, spare, substitute, per-

Mnemonic

A husband and another husband bump into each other under the sun, each carrying identical briefcases. They accidentally exchange them! One husband opens his at home to find love letters… from the other husband's wife. The sun saw everything.
Additional thoughts
Picture two nearly identical men colliding under bright sunlight, briefcases flying. The mix-up reveals secrets—making the exchange unforgettable. Two husbands stacked above a sun = swap.
Quick recall
Two husbands collide under the sun and accidentally exchange briefcases.

Details

The keyword for 替 is exchange. This kanji conveys the idea of replacing one thing with another, swapping, or substituting. It carries the sense of something being removed and something else taking its place, as in changing or alternating between two things. It is commonly associated with the act of trading, switching, or making a replacement in everyday transactions and situations.
On'yomi
たい
Kun'yomi
か.える、か.え-、か.わる

Used in kanji