Synonyms for Settle a score:

• n.

  •get even (noun)
  • get.

• v.

  •get revenge (verb)
  • pay.
  •pay (verb)
  • pay back,
  • square things,
  • repay,
  • recompense,
  • square,
  • avenge oneself,
  • punish,
  • requite,
  • make up for,
  • settle a score,
  • pay one's dues.

• Other synonyms:

  •pay
  • made up for,
  • making for,
  • paid one's dues,
  • pay dues,
  • make for,
  • squaring things,
  • paid back,
  • paying back.
  •Other relevant words (noun):
  • get back,
  • avenge,
  • counter,
  • strike back,
  • retaliate,
  • get even,
  • reciprocate.