The past tense of Empathise is empathised.
verb. be understanding of.
1. Verb, base form The aim was that the viewer would empathise with the plight of Juliet, and liken themselves to the socialist side--Romeo, who was represented as the only one that cared for a dying Juliet. 2. Verb, non-3rd person singular present State that you empathise with the customer's frustration.