stupidly
🇺🇸
/ˈstuːpɪdli/
🇬🇧
/ˈstjuːpɪdli/
in a way that shows poor thinking or decision-making
I stupidly left my phone on the bus.
私は愚かにもバスに携帯電話を忘れてしまった。
in a way that shows a lack of understanding or intelligence
He stupidly didn't study for the test.
彼は試験のために愚かにも勉強しなかった。