ἀθυμεῖν
From LSJ
λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος → a true friend is grief's physician, a worthy friend is a physician to your pain
Greek > English (Woodhouse Verbs Reversed)
(see also ἀθυμέω): dejected, despond, be cast down, be dejected, be depressed, be discouraged, be disheartened, be in low spirits, be melancholy, be sad, be sorrowful, lose courage, lose heart
Lexicon Thucydideum
animum despondere, to lose heart, 2.88.3, 6.34.5. 6.80.1. 7.60.5, 7.61.2. 7.76.1. 7.79.3, 8.11.3. 8.76.3. 8.96.2. [Deletum deleted 7.55.1.]
extimescere, to dread greatly, 5.91.1, 7.21.3, [interponitur vulgo commonly inserted τοῦ]