Unacceptable to waste time reaching secluded place (4)
I believe the answer is:
nook
'secluded place' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nook that I've seen before include "Cranny or niche" , "Hidey-hole" , "Corner - narrow recess" , "Cosy corner" , "Interior angle formed where two walls meet" .)