δυσπόνητος
From LSJ
καὶ κεραμεὺς κεραμεῖ κοτέει καὶ τέκτονι τέκτων, καὶ πτωχὸς πτωχῷ φθονέει καὶ ἀοιδὸς ἀοιδῷ → and potter is ill-disposed to potter, and carpenter to carpenter, and the beggar is envious of the beggar, the singer of the singer
English (LSJ)
ον,
A bringing toil and trouble, δαίμων A.Pers.515; δυσπόνητον ἕξετ' ἀμφ' ἐμοὶ τροφήν laborious, S.OC1614.