|Origin:||wick 'wicked' (12-20 centuries), perhaps from Old English wicca; WITCH|
behaving in a way that is morally wrong [= evil]:
the wicked stepmother in 'Hansel and Gretel'
behaving badly in a way that is amusing:
Carl had a wicked grin on his face as he crept up behind Ellen.
Tara hasn't lost her wicked sense of humour.
3 spoken informal
That's a wicked bike!
—wickedness noun [uncountable]WORD FOCUS: bad
very bad: awful, terrible, horrible, lousy informal, appalling, ghastly, atrocious, horrendous
bad, but not very bad: not very good, mediocre, second-rate, so-so, lacklustre
of bad quality: shoddy, inferior, poor quality, cheap, crummy informal
bad at doing something: be no good at something
very bad at doing something: hopeless, terrible, useless, lousy informal, incompetent
morally bad: evil, wicked, immoral, corrupt, sick, perverted, degenerate
➔ See also bad