Get to suit (6)
I believe the answer is:
become
This clue is a double definition.
'get' is the first definition.
(synonyms)
'suit' is the second definition.
(becoming can mean fitting or suitable)
'to' is the link.
(Other definitions for become that I've seen before include "Suit, befit" , "Change into - suit" , "Undergo a change or development" , "Evolve into; suit" , "Flatter" .)