While I don't agree with his methods, I deeply sympathize with the frustration that led him to take such action.

sympathize 由前缀 sym-（表示"共同"）和 pathos（希腊语词根，意为"感受、痛苦"）组成，加上动词后缀 -ize。字面意思是"共同感受"，引申为"同情、理解"。 在句中表示虽然不认同对方的行为方式，但能够设身处地理解对方产生这种行为的情绪根源。