To Be Replaced
To Be Substituted, To Be Switched
intransitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means replace, and this word means to be replaced, to be substituted, and to be switched.
Wondering about the difference between 代わる and 替わる? 代わる is used when someone or something takes the place of another, like filling in for a sick coworker. Whereas 替わる is used when things or situations switch places or are replaced with something new, like when talking about generations changing or a new governmental cabinet taking over.
This verb is intransitive, meaning it doesn't take a direct object. You'll sometimes see it with the particle を, though, because the を is showing a "path" rather than a direct object in this case. For example, 席を替わる (to switch seats) indicates your location is moving from one seat to another. Likewise, 電話を替わる indicates that a call is being handed off to another person.
The reading is the same as the one you learned with the kanji.
ドラえもんの声優が替わってから、観なくなってしまった。
I stopped watching Doraemon after the voice actor was replaced.
今回の選挙で政権が替わることになりました。
The government will be replaced as a result of this election.
もしご迷惑でなければ、席を替わってもらえませんか？彼女と一緒なんですが、席が別々になってしまったんです。
If it's not too much trouble, could you switch seats with me? I'm with my girlfriend, but we're seated separately.