ὁ δὲ πείσεται εἰς ἀγαθόν περ → he will obey you to his profit, he will obey you for his own good end
by chance: P. and V. τύχῃ, P. ἐκ τύχης, κατὰ τύχην.
unintentionally: P. and V. ἀκουσίως; see unintentionally.