Λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος – A true friend is grief's physician.
of temper: P. and V. ἥσυχος, ἡσυχαῖος, P. ἡσύχιος, Ar. and P. εὔκολος.
of temperature: P. εὐκράς (Plato; also Met., Euripides, Fragment), V. εὔκρατος (Euripides, Fragment); see climate.