довереник означава в английски

client [clients]▼(person who receives help or advice from a professional person)
noun
[UK: ˈklaɪənt] [US: ˈklaɪənt]

confidant [confidants]▼(person in whom one can confide)
noun
[UK: ˌkɒn.fɪ.ˈdænt] [US: ˈkɑːn.fə.ˌdɑːnt]