λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος → a true friend is grief's physician, a worthy friend is a physician to your pain
P. κολακικός, κολακευτικός, θωπευτικός, Ar. θωπικός.
flattering words: P. and V. θῶπες λόγοι (Euripides, Fragment).