Look for no revolutionary Americans (7)
I believe the answer is:
yankees
'americans' is the definition.
(Yankee can informally mean an American)
'look for no revolutionary' is the wordplay.
'look for' becomes 'seek' (synonyms).
'no' becomes 'nay' (archaic form 'no').
'revolutionary' is a reversal indicator (letters revolve around).
'seek'+'nay'='seeknay'
'seeknay' backwards is 'YANKEES'.
(Other definitions for yankees that I've seen before include "Northern soldiers in the American Civil War" , "Americans who fought for the north in civil war" , "NY baseball team" , "Ball-players" , "rebellious ex- colonists" .)