Lurches or stumbles (8)
I believe the answer is:
staggers
This clue is a double definition.
'lurches' is the first definition.
('stagger' can be a synonym of 'lurch')
'stumbles' is the second definition.
('stagger' can be a synonym of 'stumble')
(Other definitions for staggers that I've seen before include "causes amazement" , "Reels, lurches" , "Reels about like gagsters" , "Form of vertigo" , "Reels from side to side" .)