Clique dismissing female behaviour (6)
I believe the answer is:
action
'behaviour' is the definition.
(behaviour is someone's actions)
'clique dismissing female' is the wordplay.
'clique' becomes 'faction' (faction is a kind of clique).
'dismissing' suggests deleting specific letters.
'female' becomes 'f' (abbreviation).
'faction' with 'f' removed is 'ACTION'.
(Other definitions for action that I've seen before include "Battle or lawsuit, maybe" , "Operation - lawsuit" , "Take proceedings" , "Watch operating mechanism" , "Thing done; armed conflict" .)