Oddly, one anti-beer gets drunk (9)
I believe the answer is:
inebriate
'drunk' is the definition.
(I know that drunk can be written as inebriate)
'oddly one anti-beer' is the wordplay.
'oddly' indicates an anagram.
'one' becomes 'i' (Roman numeral).
'i'+'anti'+'beer'='iantibeer'
'iantibeer' anagrammed gives 'INEBRIATE'.
'gets' is the link.
(Other definitions for inebriate that I've seen before include "Make drunk" , "Drunkard" , "He's drunk" , "Habitual drunk" , "Exhilarate" .)