sympathise in WordNet English dictionary

1. to feel or express sympathy or compassion
   commiserate  sympathize  sympathise 
   
2. be understanding of
   "You don't need to explain--I understand!"
   sympathize  sympathise  empathize  empathise  understand 
   
3. share the feelings of; understand the sentiments of
   sympathize  sympathise 
   

sympathise in English Wiktionary