Promoted over a woman, like Rees-Mogg (8)
I believe the answer is:
hyphened
'promoted' is the definition.
Although both the answer and definition are past participle verbs, I can't see how one could define the other.
'a woman like rees-mogg' is the wordplay.
I cannot really see how this works, but
'woman' could be 'hen' and 'hen' is present in the answer.
'like' could be 'y' (similar in meaning) and 'y' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'over' acts as a link.
Can you help me to learn more?
(Other definitions for hyphened that I've seen before include "like co-pilot or vice-captain" , "With short dash (gram.)" , "dashingly connected" , "Double-barrelled?" , "Linked by a dash" .)