啞巴虧

yǎbakuī

A grievance that one has to keep to oneself.

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ya3 ba5 kui1

pent up unspoken grievances, suffering not willingly or possibly spoken of

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啞巴虧|哑巴亏 [yǎ bã kuī] ► pent-up unspoken grievances ► suffering not willingly or possibly spoken of