ἀποπειρᾶσθαι

From LSJ

ἄνθρωποι κενεῆς οἰήσιος ἔμπλεοι ἀσκοί → oh men, wineskins full of empty opinion

Source

Greek > English (Woodhouse Verbs Reversed)

(see also ἀποπειράομαι): try, make proof of, make trial of