Hindered, impeded (8)
I believe the answer is:
hampered
I believe this clue is a double definition.
'hindered' is the first definition.
('hamper' can be a synonym of 'hinder')
'impeded' is the second definition.
(I've seen this in another clue)
(Other definitions for hampered that I've seen before include "Impeded" , "Frustrated" , "Obstructed; handicapped" , "Hindered, cramped" , "Prevented free movement, restricted" .)