Traded badly when hurried (6)
I believe the answer is:
darted
'hurried' is the definition.
(darting is a kind of hurrying)
'traded badly' is the wordplay.
'badly' indicates an anagram (letters in the wrong order).
'traded' with letters rearranged gives 'DARTED'.
'when' acts as a link.
(Other definitions for darted that I've seen before include "Was fleet" , "Moved suddenly like game missile" , "Dashed, on the electric train?" , "Moved quickly and suddenly" , "Sniped" .)