adjective
Mischievous; tending to misbehave or act badly (especially of a child).
Sexually provocative; now in weakened sense, risqué, cheeky.
(informal, of a treat) Decadent, had as indulgence, especially an unhealthy one.
(now rare, archaic) Evil, wicked, morally reprehensible.
(obsolete) Bad, worthless, substandard.
verb
To perform sexual acts upon.