Ask at the forum if you have an Ancient or Modern Greek query!
Λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος – A true friend is grief's physician.
annihilate: P. and V. ἐξαλείφω, ἐξαλείφειν, V. ἐκτρίβειν; see also destroy.
eradicate from the mind: P. and V. ἐξαλείφω, ἐξαλείφειν.