Synonyms of 'commiserate'
to express sympathy with someone in grief, pain, etc
If you pity someone, you feel very sorry for them.
I don't know whether to hate him or pity him.
feel sorry for
take pity on
have compassion for
Thesaurus for commiserate from the Collins English Thesaurus
If you commiserate with someone, you show them pity or sympathy when something unpleasant has happened to them.