yǒu kǔ shuō bu chū
having unspeakable bitter suffering
(often used after 啞巴吃黃連|哑巴吃黄连[ya3 ba5 chi1 huang2 lian2])
yǎ ba chī huáng lián , yǒu kǔ shuō bu chū
to be forced to suffer in silence
unable to speak of one's bitter suffering
sometimes written 啞子吃黃連,有苦說不出|哑子吃黄连,有苦说不出