耿耿于怀

gěng gěng yú huái

unable to let something go

Character by character

耿gěng
troubled

于yú
in

怀huái
heart

都过去好几年了，他还对那件事耿耿于怀。

It’s been years, and he still can’t let it go.

Tone: neutral.

Of a grudge or regret that lingers, usually 对…耿耿于怀.

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