勝手に の意味 | Babel Free

定義

1. selfishly; for one's convenience; wilfully, as one pleases
2. on one's own, by oneself; done in a way that does not require the assistance of another (person or thing)
   especially

等価語

例文

“パソコンが勝手に再起動する現象”

the phenomenon of one's computer rebooting on its own

“怖かった、ドアが勝手に開いたんだ！”

I was so scared. The door opened on its own!

CEFRレベル