Match to last for a while (6)
I believe the answer is:
belong
'match' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for belong that I've seen before include "accepted socially" , "'Be part of, fit in (6)'" , "Be rightly assigned (to)" , "Be owned by" , "Be attached" .)