1 sinful, iniquitous, given to or involving immorality.
2 spiteful, ill-tempered; intending or intended to give pain.
3 playfully malicious.
4 colloq. foul; very bad; formidable (wicked weather; a wicked cough).
5 sl. excellent, remarkable.
Phrases and idioms:
Wicked Bible an edition of 1631, with the misprinted commandment 'thou shalt commit adultery'.
Derivatives:
wickedly adv. wickedness n.
Etymology: ME f. obs. wick (perh. adj. use of OE wicca wizard) + -ED(1) as in wretched
Useful english dictionary. 2012.