Finalize (6)
'finalize' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sew up that I've seen before include "Complete (something) satisfactorily" , "Polish off" , "Darn; conclude" , "Successfully complete" , "Successfully secure" .)
'finalize' is the definition.
(synonyms)
This is all the clue.
(Other definitions for nail down that I've seen before include "Bind to a promise, using hammer and metal pin" , "Identify (something) precisely" , "An old win (anag.)" , "make final" , "Firmly fix" .)
'finalize' is the definition.
(I know that finalize can be written as settle)
This is the entire clue.
(Other definitions for settle that I've seen before include "Resolve or reach an agreement" , "Find a home" , "Agree or decide (one's position)" , "Come to an agreement about something" , "Pay or come to rest" .)