Lord settled in US city? Not quite (6)
I believe the answer is:
nearly
'not quite' is the definition.
(nearly can mean not quite or almost)
'lord settled in us city?' is the wordplay.
'lord' becomes 'earl' (earl is a kind of lord).
'settled in' indicates putting letters inside.
'us city?' becomes 'NY' (short for New York).
'earl' put within 'ny' is 'NEARLY'.
(Other definitions for nearly that I've seen before include "approximately" , "More or less" , "Not entirely" , "Close" , "pretty much" .)