Settle a match? (6)
I believe the answer is:
alight
'settle' is the definition.
(I've seen this before)
'a match?' is the wordplay.
'match?' becomes 'light' (I've seen this in other clues).
'a'+'light'='ALIGHT'
(Other definitions for alight that I've seen before include "scorched?" , "staying in?" , "Land, come down" , "Burning; get down" , "following action of arsonist?" .)