Liz Truss reflects after women's organisation's "ineffectual person” label (4)
I believe the answer is:
wimp
'ineffectual person label' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'liz truss reflects after women's organisation's' is the wordplay.
'liz truss' becomes 'pm' (I can't justify this - if you can you should give a lot more credence to this answer).
'reflects' is a reversal indicator.
'after' means one lot of letters go next to another.
'women's organisation' becomes 'wi' (abbreviation for Women's Institute).
'pm' in reverse letter order is 'mp'.
'mp' put after 'wi' is 'WIMP'.
Can you help me to learn more?
(Other definitions for wimp that I've seen before include "Mummy's boy" , "A weak ineffectual man" , "Feeble or ineffective man" , "An ineffectual male" , "Spineless type" .)