συνευφραίνεσθαι
From LSJ
Ζήτει σεαυτῷ καταλιπεῖν εὐδοξίαν → Tibi studeto gloriam relinquere → Dir guten Ruf zu hinterlassen sei bemüht
Greek > English (Woodhouse Verbs Reversed)
(see also: συνευφραίνομαι) rejoice with another, sympathise with in joy, sympathise with