Akademik

mischievous
adjective /ˈmɪsʧɪvəs/
a) Causing mischief; injurious.

Matthew had a twin brother called Edward, who was always mischievous and badly behaved.

b) Troublesome, cheeky, badly behaved.
Syn: harmful, hurtful, detrimental, noxious, pernicious, destructive, badly-behaved, naughty

Wikipedia foundation.