σιγᾶν ἄμεινον ἢ λαλεῖν ἃ μὴ πρέπει → it's better to keep silence than to say what's not appropriate (Menander)
adv.
P. and V. ἀκουσίως, or use P. and V. ἄκων or οὐχ ἑκών, agreeing with subject; e. g., do a thing involuntarily: P. and V. ἄκων ποιεῖν τι.
