I allow clothes back on in the dark (8)
I believe the answer is:
ignorant
'in the dark' is the definition.
(thesaurus)
'i allow clothes back on' is the wordplay.
'allow' becomes 'grant' ('grant' can be a synonym of 'allow'**).
'clothes' is an insertion indicator.
'back' is a reversal indicator.
'on' written backwards gives 'no'.
'grant' enclosing 'no' is 'gnorant'.
'i'+'gnorant'='IGNORANT'
(Other definitions for ignorant that I've seen before include "Rude or knowing very little" , "No rating for being uninformed" , "No rating (anag) - clueless" , "Discourteous" , "Lacking knowledge or lacking manners" .)