Half a score clever? It's feasible! (7)
I believe the answer is:
tenable
'feasible' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?
'half a score clever?' is the wordplay.
'half a score' becomes 'ten' (I've seen this in another clue).
'clever?' becomes 'able' (able can mean skilled or talented).
'ten'+'able'='TENABLE'
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for tenable that I've seen before include "Viable" , "Capable of being kept" , "Based on sound reasoning or evidence" , "possible to maintain" , "Late Ben (anag.)" .)