Endless liberty arranged for first female nut (7)
I believe the answer is:
filbert
'nut' is the definition.
(filbert is a kind of nut)
'endless liberty arranged for first female' is the wordplay.
'endless' means to remove the last letter.
'arranged' is an anagram indicator.
'for' means one lot of letters go next to another (I've seen this in other clues).
'first' indicates taking the first letters.
The first letter of 'female' is 'f'.
'liberty' with its final letter removed is 'libert'.
'libert' anagrammed gives 'ilbert'.
'ilbert' after 'f' is 'FILBERT'.
(Other definitions for filbert that I've seen before include "Type of hazelnut" , "Nut -- left rib (anag)" , "Hazel nut" .)