Terribly ill on beer provoking uprising (9)
I believe the answer is:
rebellion
'uprising' is the definition.
(I know that uprising can be written as rebellion)
'terribly ill on beer' is the wordplay.
'terribly' indicates an anagram.
'ill'+'on'+'beer'='illonbeer'
'illonbeer' with letters rearranged gives 'REBELLION'.
'provoking' is the link.
(Other definitions for rebellion that I've seen before include "Coup d'tat" , "Rising" , "Defiance" , "Revolting" , "insurgence" .)