抱怨
bàoyuàn
to complain
verb
Example
他总是抱怨工作太累，但从不想办法解决。
Tā zǒngshì bàoyuàn gōngzuò tài lèi, dàn cóng bù xiǎng bànfǎ jiějué.
He always complains that work is too tiring, but never thinks of ways to solve it.
A common verb used to express dissatisfaction or grievances. Often followed by the thing being complained about.