αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
P. and V. ἀκουσίως, οὐχ ἑκούσιως, P. ἀκόντως, or use adj., unwilling.