Tedium, being embraced by drunken nuisance (5)
I believe the answer is:
ennui
'tedium' is the definition.
('ennui' can be a synonym of 'tedium')
'embraced by drunken nuisance' is the wordplay.
'embraced' indicates the answer is hidden within the clue.
'ENNUI' is hidden in the letters of 'by drunken nuisance'.
'being' is the link.
(Other definitions for ennui that I've seen before include "Feeling of listlessness" , "The feeling of being bored" , "Mental weariness" , "bore" , "Sense of tedium" .)