1 evil, bad, immoral, amoral, unprincipled, sinful, impious, irreligious, blasphemous, profane, sacrilegious, ungodly, godless, diabolic(al), satanic, Mephistophelian, demonic, demoniac(al), hellish, infernal, accursed, damnable, fiendish, ghoulish:
How wicked must one be to murder one's own child? She has done many wicked things, but this was the worst.
2 depraved, dissolute, villainous, black-hearted, iniquitous, horrible, horrid, hideous, heinous, beastly, base, low, vile, debased, degenerate, perverse, perverted, corrupt, foul, offensive, abominable, disgraceful, shameful, dreadful, awful, gross, gruesome, grim, appalling, grisly, loathsome, lawless, unrepentant, unregenerate, incorrigible, criminal, felonious, rascally, knavish, terrible, egregious, execrable:
The Deluge was regarded as divine vengeance on a wicked world. He was a wicked man, in league with the devil himself.
3 dirty, pornographic, filthy, erotic, obscene, lewd, offensive, indecent, prurient, smutty, rude, taboo, blue, coarse, bawdy, vulgar, salacious, licentious, nasty, X-rated, Colloq US raunchy:
The townspeople took the wicked books and burnt them all.
4 vicious, beastly, savage, nasty, bad, violent, mean, cruel:
Graham has a wicked temper. The boys were subjected to the most wicked treatment.
5 naughty, mischievous, impish, sly, devilish, rascally, roguish, scampish, puckish; vexatious, exasperating, annoying, irritating, irksome, trying, galling, bothersome:
What trouble have those wicked children got themselves into now? It is wicked of you to make pig noises every time I mention Bertha.
6 foul, offensive, pernicious, baleful, mephitic, disgusting, revolting, sickening, repulsive, repellent, nauseous, repugnant, rotten, pestilential, noxious:
That liniment the doctor prescribed has a wicked odour.
7 expert, ingenious, superior, superb, superlative, outstanding, masterful, masterly, skilful, deft, adept:
That chap Gough plays a wicked game of tennis.