Moderate has basic urbanity (4)
I believe the answer is:
curb
'moderate' is the definition.
(I know that moderate can be written as curb)
'basic urbanity' is the wordplay.
'CURB' is hidden in amongst the letters.
However, I'm not sure how the hidden word is indicated.
'has' is the link.
Can you help me to learn more?
(Other definitions for curb that I've seen before include "Rein in" , "Constrain" , "Restrain, inhibit" , "Muzzle" , "Hold back or try to prevent" .)