Proust's strange intoxicated state (6)
I believe the answer is:
stupor
'intoxicated state' is the definition.
(I've seen this in another clue)
'proust's strange' is the wordplay.
'strange' indicates an anagram.
'proust' is an anagram of 'STUPOR'.
(Other definitions for stupor that I've seen before include "State of near insensibility" , "State of being stunned" , "Dazed or unconscious condition, sometimes caused by alcohol" , "Dazed condition as from drink or drugs" , "A state of coma or drowsiness" .)