knowingly
From LSJ
Κακὸν φέρουσι καρπὸν οἱ κακοὶ φίλοι → Malo ex amico fructus oritur pessimus → Ertrag, den schlechte Freunde bringen, der ist schlecht
intentionally: P. and V. ἑκουσίως, or use P. and V. ἑκών, εἰδώς, V. φρονῶν, all agreeing with subject.