ὑπὸ δὲ οἴστρου ἀεὶ ἑλκομένη ψυχή → a soul always dragged along by the fury of passion
useful: P. and V. χρήσιμος, χρηστός, σύμφορος, πρόσφορος, Ar. and P. ὠφέλιμος, Ar. and V. ὠφελήσιμος.
