Extremely Wicked , Shockingly Evil and Vile

Vile : Extremely unpleasant.

"he has a vile temper"

VILE	Extremely Unpleasant
synonyms	foul, nasty, unpleasant, bad, disagreeable,  horrid, horrible,  dreadful,  abominable, atrocious,  offensive, obnoxious, odious, unsavoury,  repulsive, off-putting, repellent, revolting, repugnant, disgusting, distasteful, loathsome,  hateful,  nauseating, sickening; base, low, mean, wretched, disgraceful,  appalling,  shocking, ugly, vulgar, sorry, shabby, shameful, dishonourable, execrable,  heinous,  abhorrent, deplorable, monstrous,  wicked, evil, dark, dirty, vicious, iniquitous, sinful, corrupt, sordid, depraved,  perverted,  debased, reprobate, degenerate, debauched, dissolute, contemptible,  despicable,  reprehensible,  diabolical, diabolic, devilish, fiendish, hellish, damnable;
informal	yucky, sick-making, gut-churning, icky, gross, godawful, low-down, rotten, sick;
	bogging
	lousy, vomitous;
vulgar slang	Shitty
literary	Noisome
archaics	curvy, disgustful, loathly;
Rare	egregious, flagitious
	"a vile smell"