Catch showing a degree of inability (3)
I believe the answer is:
nab
'catch' is the definition.
(nab can mean to capture or arrest)
'a degree of inability' is the wordplay.
'NAB' is hidden in amongst the letters.
However, I'm uncertain how this is indicated.
'showing' is the link.
Can you help me to learn more?
(Other definitions for nab that I've seen before include "Catch; grab suddenly" , "Arrest (colloq.)" , "Collar (sl.)" , "Apprehend" , "Take" .)