It's commonplace to outlaw a local leader (5)
I believe the answer is:
banal
'it's commonplace' is the definition.
(synonyms)
'outlaw a local leader' is the wordplay.
'outlaw' becomes 'ban' (banning is a kind of outlawing).
'leader' says to take the initial letters.
The initial letter of 'local' is 'l'.
'ban'+'a'+'l'='BANAL'
'to' is the link.
(Other definitions for banal that I've seen before include "tired" , "lacking interest?" , "Everyday" , "Obvious and dull" , "Tediously unoriginal" .)