Celebrity, possibly impotent (7)
I believe the answer is:
notable
This clue could be a double definition.
'celebrity' is the first definition.
(notable is a kind of celebrity)
'impotent' is the second definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?
'possibly' acts as a link.
Can you help me to learn more?
(Other definitions for notable that I've seen before include "Widely known and esteemed" , "Outstanding" , "Big noise" , "Unusual" , "Significant or distinguished" .)