μέγα βιβλίον ἴσον τῷ μεγάλῳ κακῷ → a big book is the same as a big bad | a big book is the same as a big pain | a big book is a big evil | big book, big bad
P. and V. ἀκουσίως or use P. and V. ἄκων, οὐχ ἑκών agreeing with subject.
to do a thing intentionally: P. and V. ἄκων ποιεῖν τι.