You commiserate together about life's problems.
They told him no, and with a wave, he was off to commiserate with his protégés.
Your older child will feel even more grown up when he can commiserate with you.
She wanted to commiserate with the horse's assistant, who seemed as awkward in his role as Jessi felt in hers.
Complaining brings people together to commiserate and to support each other in how miserable their situation is.