Inauspicious (7)
'inauspicious' is the definition.
(thesaurus)
This is the entire clue.
'inauspicious' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for adverse that I've seen before include "negative result" , "Contrary -- inauspicious" , "Contrary, harmful" , "Detrimental" , "'Contrary, untoward (7)'" .)