sympathy

(noun) an inclination to support or be loyal to or to agree with an opinion. Synonyms: understanding. Examples: "His sympathies were always with the underdog." "I knew i could count on his understanding."

(noun) sharing the feelings of others (especially feelings of sorrow or anguish). Synonyms: fellow feeling.

(noun) a relation of affinity or harmony between people; whatever affects one correspondingly affects the other. Example: "The two of them were in close sympathy."