κακόκεφος

From LSJ

φωνὰ τύ τίς ἐσσι καὶ οὐδὲν ἄλλο → it's all voice you are, and nothing else | it's all voice ye are, and nought else

Source

Greek Monolingual

-η, -ο
δύσθυμος, άκεφος.
[ΕΤΥΜΟΛ. < κακ(ο)- + κέφι].