ξένῳ δὲ σιγᾶν κρεῖττον ἢ κεκραγέναι → it's better for a stranger to keep silence than to shout (Menander)
excessive: P. and V. περισσός.
extravagant: Ar. and P. ὑπερφυής.
haughty: P. ὑπερήφανος, μεγαλόφρων. V. ὑπέρφρων, ὑπέρκοπος.