Being drunk entices ex (9)
I believe the answer is:
existence
'being' is the definition.
('existence' can be a synonym of 'being')
'drunk entices ex' is the wordplay.
'drunk' indicates anagramming the letters.
'entices'+'ex'='enticesex'
'enticesex' with letters rearranged gives 'EXISTENCE'.
(Other definitions for existence that I've seen before include "The business of being" , "survival" , "Way of life" , "State of being" , "A way of living" .)