Thayer's Greek Lexicon

 1. to deliver, to give away for one's own profit what is one's
own, to sell
2. to pay off, discharge what is due
  1) a debt, wages, tribute, taxes, produce due
  2) things promised under oath
  3) conjugal duty
  4) to render account
3. to give back, restore
4. to requite, recompense in a good or a bad sense