Criticise each new flamboyance (7)
I believe the answer is:
panache
'flamboyance' is the definition.
(I've seen this before)
'criticise each new' is the wordplay.
'criticise' becomes 'pan' (informal term meaning to criticise heavily).
'new' indicates anagramming the letters.
'each' with letters rearranged gives 'ache'.
'pan'+'ache'='PANACHE'
(Other definitions for panache that I've seen before include "Grand manner, theatricality" , "Distinctive elegance" , "stylish carriage" , "Flamboyance - style" , "Flamboyant sense of style" .)