1 synonym for Sinister

wicked, evil, nefarious, malevolent, malicious, vile, heinous, diabolical, fiendish, sinister, monstrous, atrocious, despicable, depraved, corrupt, iniquitous, villain-like, base, black-hearted, infernal, demonic, devilish, hellish, ungodly, immoral, reprobate, scurrilous, scoundrelly, knavish, rascally, roguish, unprincipled, unscrupulous, felonious, criminal, unlawful, illegal, illicit, outlawed, banned, forbidden, prohibited, wrongful, wicked-minded, bad, mean, nasty, cruel, heartless [x]