An idle drunk gets rejection (6)
I believe the answer is:
denial
'rejection' is the definition.
(I've seen this before)
'an idle drunk' is the wordplay.
'drunk' indicates anagramming the letters.
'an'+'idle'='anidle'
'anidle' with letters rearranged gives 'DENIAL'.
'gets' acts as a link.
(Other definitions for denial that I've seen before include "Daniel (anag.)" , "Declaration that something is untrue" , "Refusal to acknowledge" , "Act of asserting that something alleged is not true" , "Refusal to believe an unacceptable truth" .)