One unfairly judging women’s cycling prevails (6)
I believe the answer is:
exists
'prevails' is the definition.
The answer and definition can be both to do with fundamental existence as well as being verbs in their -s form.
Perhaps you can see an association between them that I can't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for exists that I've seen before include "Has being, is actual" , "Has objective reality" , "Is present in the real world" , "Is present in the universe" , "Is extant" .)