Nit turned in looked amazed (9)
I believe the answer is:
staggered
'amazed' is the definition.
(staggering is a kind of amazing)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for staggered that I've seen before include "Gobsmacked" , "Did floor" , "not to be starting together" , "Arranged to take place at intervals" , "Deeply shocked or walked unsteadily as if about to fall" .)