Some feminists' poor theory about men (6)
I believe the answer is:
troops
'men' is the definition.
(thesaurus)
'some feminists' poor theory about' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'about' says the letters should be written backwards.
'spoort' can be found hidden inside 'feminists poor theory'.
'spoort' in reverse letter order is 'TROOPS'.
(Other definitions for troops that I've seen before include "Soldiers, armed forces" , "Military forces" , "Cavalry" , "men" , "Groups of soldiers" .)