τί ἥδιστον, τὸ ἐπιτυγχάνειν → what's pleasant, to get the goal
P. and V. ὀξύς, Ar. and P. ἀκράχολος, Ar. and V. ὀξύθυμος, V. δύσοργος.
excitable: P. σφοδρός.
impassioned: P. and V. ἔντονος, σύντονος.