I would like to know what does 歯が欠ける mean: Lacking teeth? Broken teeth?

Context: 人の幸せを素直に喜べないやつ理解出来なさすぎて、また歯が欠けた。

My translation:

I can't barely understand people who cannot honestly be glad for other's happiness, 「???」.

How would you translate the expression 歯が欠ける?

Thank you so much in advance for your help!

  • Seems to be idiomatic...
    – istrasci
    Aug 14, 2020 at 16:24

1 Answer 1


This is not an idiom, and また歯が欠けた means "my tooth was chipped again (because I clenched my theeth)". Although I haven't seen something like this before, I can imagine this person said this to express his uncontrollable frustration. Perhaps this is an exaggerated joke, and he did not chipped his tooth in reality.

  • Thank you so much for your answer! :)
    – Rick
    Aug 15, 2020 at 17:14

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