哑巴亏 (啞巴虧) yǎbakuī

yǎbakuī noun pent-up unspoken grievances; suffering not willingly or possibly spoken of
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '啞巴虧')

Contained in

• 吃哑巴亏(吃啞巴虧) to be forced to suffer in silence; unable to speak of one's bitter suffering