Match power with attitude (4)
I believe the answer is:
pair
'match' is the definition.
('pair' can be a synonym of 'match')
'power with attitude' is the wordplay.
'power' becomes 'p'.
'with' says to put letters next to each other.
'attitude' becomes 'air' (I've seen this before).
'p'+'air'='PAIR'
(Other definitions for pair that I've seen before include "Two ducks in one game of cricket" , "Cereal used as food" , "Couple - wed" , "Two of a kind, as in cards" , "2" .)