Answer: oldscore

AnswerCrossword Clue
OLDSCORE

It may take years to settle one

OLDSCORE

It's often hard to settle

OLDSCORE

One might want to settle it

OLDSCORE
Something you might want to settle
OLDSCORE
Something that has long needed settling
OLDSCORELongstanding issue
OLDSCORESomething to settle
OLDSCOREWhat a bitter person might try to settle