Vile (9)
(Other definitions for grotesque that I've seen before include "Freakish" , "Comically ugly" , "Horribly distorted" , "Outlandish" , "Bizarre and disfigured - preposterous" .)
'vile' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for nasty that I've seen before include "grave" , "Offensive or malicious" , "Highly repugnant" , "Highly unpleasant" , "Spiteful and unkind" .)
'vile' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for disgusting that I've seen before include "Arousing revulsion" , "Nauseating" , "Revolting" .)