Jaundiced (7)
I believe the answer is:
cynical
'jaundiced' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for cynical that I've seen before include "Adjective for person who never believes in good motives" , "Sceptical, mocking" , "Believing the worst of human nature" , "Of a pessimistic disposition about the world" , "Disinclined to believe the sincerity of others" .)