εὐθυμεῖν
From LSJ
Ἡ γὰρ σιωπὴ μαρτυρεῖ τὸ μὴ θέλειν → Hominem non velle significat silentium → Das Schweigen zeugt davon, dass der, der schweigt, nicht will
Greek > English (Woodhouse Verbs Reversed)
(see also εὐθυμέω): gladden, be cheerful, be of good cheer, be of good comfort, keep up one's spirits, enjoy oneself