Ask at the forum if you have an Ancient or Modern Greek query!
harmfully: P. ἀνεπιτηδείως, P. and V. κακῶς.
maliciously: P. φθονερῶς, ἐπιφθόνως.
wickedly: P. κακούργως:Ar. and P. πανούργως.
saucily - P. ὑβριστικῶς.
wantonly: Ar. and P. νεανικῶς.