Resent sloshed Hemingway? (6)
I believe the answer is:
ernest
'hemingway?' is the definition.
(synonyms)
'resent sloshed' is the wordplay.
'sloshed' indicates an anagram.
'resent' anagrammed gives 'ERNEST'.
(Other definitions for ernest that I've seen before include "Author Hemmingway, and Oscar Wilde's hero" , "The boy sounds serious" , "- Shackleton, Antarctic explorer" , "chap" , "- Hemingway, US author" .)