Be concerned about the politician's ability (7)
I believe the answer is:
calibre
'ability' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'be concerned about the politician's' is the wordplay.
'be concerned' becomes 'care' (I've seen this before).
'about' indicates putting letters inside.
'the politician' becomes 'lib'.
'care' enclosing 'lib' is 'CALIBRE'.
Can you help me to learn more?
(Other definitions for calibre that I've seen before include "Quality of character" , "weapon's bore?" , "Level of ability; bore" , "Personal character" , "measure of a bore" .)