Commiserate (verb)

1. Feel or express sympathy or pity for someone.
2. To share in or understand the feelings of another person, especially those of sorrow or disappointment.

Origin:

Late 16th century: from latin commiserari "have compassion for", from com- (from cum "together with") + miserari "have compassion".

Examples:

1. I commiserated with her on the loss of her father.
2. We commiserated over the failure of our business venture.
3. The two friends commiserated on the difficulties they were facing.
4. The team commiserated with their coach after the loss of the game.
5. He commiserated with her over the loss of her job.