Abandoned female allowed outside (4)
I believe the answer is:
left
'abandoned' is the definition.
(thesaurus)
'female allowed outside' is the wordplay.
'female' becomes 'f' (abbreviation).
'allowed' becomes 'let' (I've seen this before).
'outside' is an insertion indicator.
'f' put into 'let' is 'LEFT'.
(Other definitions for left that I've seen before include "Gone away - remaining" , "Communist?" , "Went; port" , "Facing north, it's the side toward the west" , "set out" .)