Reportedly trim couple (4)
I believe the answer is:
pair
'couple' is the definition.
('pair' can be a synonym of 'couple')
'reportedly trim' is the wordplay.
'reportedly' shows a homophone (sound like).
'trim' becomes 'pare' (I've seen this before).
'pare' sounds like 'PAIR'.
(Other definitions for pair that I've seen before include "2" , "Agreement to avoid division" , "players of duet?" , "Cereal used as food" , "Twosome" .)