In search of lost time, author is in a daze (6)
I believe the answer is:
stupor
'is in a daze' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for stupor that I've seen before include "A state of coma or drowsiness" , "Dazed condition as from drink or drugs" , "result of too much snow?" , "Semi-conscious state" , "Proust found in dazed condition" .)