αὐτοβοεί
From LSJ
ἄμεινον γὰρ ἑαυτῷ φυλάττειν τὴν ἐλευθερίαν τοῦ ἑτέρων ἀφαιρεῖσθαι → for it is better to guard one's own freedom than to deprive another of his
English (LSJ)
Adv.
A by a mere shout, at the first shout, αὐ. ἑλεῖν take without a blow, Th.2.81, 3.113, 8.62, etc.; αὐ. λαβεῖν κλέπτοντα, = ἐπ' αὐτοφώρῳ, AB 465.