Humiliation as member rants drunkenly (13)
I believe the answer is:
embarrassment
'humiliation' is the definition.
(thesaurus)
'as member rants drunkenly' is the wordplay.
'drunkenly' indicates an anagram.
'as'+'member'+'rants'='asmemberrants'
'asmemberrants' with letters rearranged gives 'EMBARRASSMENT'.
(Other definitions for embarrassment that I've seen before include "Awkwardness, shame" , "Shame felt in public" , "Surplus" , "Financial difficulty -- abundance" , "Sheepishness" .)