Disoriented
There are a few possibilities for this:
out of it
'disoriented' is the definition.
(I know that disoriented can be written as lost)
This is the entire clue.
(Other definitions for lost that I've seen before include "Missing" , "Mislaid or was defeated" , "Unable to be found" , "TV series!" , "confused" .)
(Other definitions for out of it that I've seen before include "Without a chance" , "Eliminated" , "is not included" , "Forlorn" , "unaware of what's going on" .)