discontent and grumbling; complaints
A yojijukugo expressing a state of dissatisfaction accompanied by vocal complaints. Often used in set phrases like 不平不満を言う or 不平不満が募る.
He is always grumbling and complaining.
His discontent grew until he finally quit the company.
A yojijukugo combining 不平 (discontent) and 不満 (dissatisfaction), reinforcing the idea of persistent complaining.