What provides bite, unexpectedly ironic, about Society (7)
I believe the answer is:
incisor
'what provides bite' is the definition.
(incisor is a type of tooth)
'unexpectedly ironic about society' is the wordplay.
'unexpectedly' indicates anagramming the letters.
'about' is an insertion indicator.
'society' becomes 's' (common abbreviation in names of organisations).
'ironic' is an anagram of 'incior'.
'incior' enclosing 's' is 'INCISOR'.
(Other definitions for incisor that I've seen before include "cutter" , "Narrow-edged tooth" , "Chisel-edged tooth" , "Ivory perhaps" , "companion could be Goofy" .)