Last Updated：2025/11/21

(Britain, US, idiomatic) Someone whose behaviour is reprehensible or irresponsible; a rogue. / (literally) An egg that has gone bad; a rotten egg.

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bad egg

Source Word

bad egg

IPA(Pronunciation)

Noun

Britain US idiomatic literally

Japanese Meaning

（比喩的な意味）非難すべき行動をする人、無責任な行動をとる人物、抜け駆け者 / （文字通りの意味）腐敗した卵、悪くなった卵

Everyone warned me about Tom, but I didn't listen; it turned out he was a bad egg.

みんなトムに注意しろと言っていたが、私は聞かなかった。結局、彼はろくでなしだった。

Sense（1）

(Britain, US, idiomatic) Someone whose behaviour is reprehensible or irresponsible; a rogue.

"This is a plot against me!" fumed the swindler.

Sense（2）

(literally) An egg that has gone bad; a rotten egg.

bad eggs

（ plural ）