Vile
WordNet
adjective
(1) Morally reprehensible
"Would do something as despicable as murder"
"Ugly crimes"
"The vile development of slavery appalled them"
"A slimy little liar"
(2) Causing or able to cause nausea
"A nauseating smell"
"Nauseous offal"
"A sickening stench"