牢骚

HSK 7-9

láosāo

complaints; grumblings; dissatisfaction (often 'petty complaints')

发牢骚

fā láosāo

Complaining.

别老发牢骚

bié lǎo fā láosāo

Don't keep complaining.

他心里有一肚子牢骚

tā xīnli yǒu yí dùzi láosāo

He has a lot of grievances in his heart.