Dodgy South American exercise court (7)
I believe the answer is:
suspect
'dodgy' is the definition.
(I've seen this before)
'south american exercise court' is the wordplay.
'south american' becomes 'sus' (I've seen this in other clues).
'exercise' becomes 'pe' (Physical Education).
'court' becomes 'ct'.
'sus'+'pe'+'ct'='SUSPECT'
(Other definitions for suspect that I've seen before include "Possibly dangerous or false" , "Doubt - man being questioned by police" , "Believe to be guilty, but without proof" , "Have reason to believe" , "Consider or believe likely" .)