Criticise each new style (7)
I believe the answer is:
panache
'style' is the definition.
(panache means style or verve)
'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 "A dashing manner" , "stylish carriage" , "Dash and verve" , "Great style" , "A confident stylish manner" .)