Her supporter has force in Times spread (8)
I believe the answer is:
feminist
'her supporter' is the definition.
I can't judge whether this defines the answer.
'force in times spread' is the wordplay.
'force' becomes 'f' (symbol used in Physics e.g. f=ma).
'spread' indicates an anagram.
'in'+'times'='intimes'
'intimes' anagrammed gives 'eminist'.
'f'+'eminist'='FEMINIST'
'has' acts as a link.
Can you help me to learn more?
(Other definitions for feminist that I've seen before include "I'm finest as activist in women's lib movement" , "Advocate of women's rights" , "Female supporter" , "I'm finest (anag.)" , "Mine's fit (anag.)" .)