Rushed up with arguments for contracts (7)
I believe the answer is:
narrows
'contracts' is the definition.
('narrow' can be a synonym of 'contract')
'rushed up with arguments' is the wordplay.
'rushed' becomes 'ran'.
'up' is a reversal indicator (in down clue: letters go upwards).
'with' means one lot of letters go next to another.
'arguments' becomes 'rows' (I've seen this before).
'ran' reversed gives 'nar'.
'nar'+'rows'='NARROWS'
'for' is the link.
(Other definitions for narrows that I've seen before include "Contracts" , "Sound" , "Constricts" , "Confines" , "Gets smaller in width" .)