εὐκέφαλος
From LSJ
τὸ δ' ἡδέως ζῆν καὶ ἱλαρῶς οὐκ ἔξωθέν ἐστιν, ἀλλὰ τοὐναντίον ὁ ἄνθρωπος τοῖς περὶ αὑτὸν πράγμασιν ἡδονὴν καὶ χάριν ὥσπερ ἐκ πηγῆς τοῦ ἤθους προστίθησιν → but a pleasant and happy life comes not from external things, but, on the contrary, man draws on his own character as a source from which to add the element of pleasure and joy to the things which surround him
English (LSJ)
ον,
A with a good head, Arr.Cyn.4.4 (del. Hercher), Poll. 2.43, Hippiatr.115.
German (Pape)
[Seite 1074] mit gutem Kopf, Arr. cyn. 4, 4.
Greek (Liddell-Scott)
εὐκέφᾰλος: -ον, καλὴν ἔχων κεφαλήν, Ἀρρ. Κυν. 4. 4.