wicked
1 abandoned, abominable, amoral, atrocious, bad, black-hearted, corrupt, debased, depraved, devilish, dissolute, egregious, evil, fiendish, flagitious, foul, guilty, heinous, immoral, impious, iniquitous, irreligious, maleficent, nefarious, scandalous, shameful, sinful, sink, unprincipled, unrighteous, vicious, vile, villainous, worthless
2 arch, impish, incorrigible, mischievous, naughty, rascally, roguish
3 acute, agonizing, awful, crashing, destructive, dreadful, fearful, fierce, harmful, injurious, intense, mighty, painful, severe, terrible
4 bothersome, difficult, distressing, galling, offensive, troublesome, trying, unpleasant
5 (slang) adept, adroit, deft, expert, masterly, mighty, outstanding, powerful, skilful, strong
Antonyms
benevolent, ethical, good, harmless, honourable, innocuous, mannerly, mild, moral, noble, obedient, pleasant, principled, virtuous, well-behaved, wholesome