The Collaborative International Dictionary of English v.0.48:

Requital \Re*quit"al\ (-al), n. [From Requite.]
   The act of requiting; also, that which requites; return, good
   or bad, for anything done; in a good sense, compensation;
   recompense; as, the requital of services; in a bad sense,
   retaliation, or punishment; as, the requital of evil deeds.
   [1913 Webster]

         No merit their aversion can remove,
         Nor ill requital can efface their love.  --Waller.
   [1913 Webster]

   Syn: Compensation; recompense; remuneration; reward;
        satisfaction; payment; retribution; retaliation;
        reprisal; punishment.
        [1913 Webster]

WordNet (r) 3.0 (2006):

requital
    n 1: a justly deserved penalty [syn: retribution, requital]
    2: an act of requiting; returning in kind [syn: requital,
       payment]

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "requital":
   amends, atonement, blood money, comeuppance, compensation,
   consideration, damages, desert, deserts, guerdon, honorarium,
   indemnification, indemnity, just deserts, making good, meed,
   paying back, payment, price, punishment, quid pro quo, quittance,
   recompense, redress, refund, reimbursement, remuneration,
   reparation, repayment, reprisal, requitement, restitution,
   retaliation, retribution, return, revenge, reward, salvage,
   satisfaction, smart money, solatium, squaring, vengeance, wergild,
   what is due, what is merited