Antonyms of remission:
penalty, punishment, retaliation, retribution, vengeance, conviction, sentence, assessment, charge, fine, imposition, levying, castigation, chastening, chastisement, condemnation.
Examples of usage:
  1. I should know a great character when I saw it, and I should delight in it with a generosity which would do something toward the remission of my sins.
    "Roderick Hudson", Henry James.
  2. This remission, which had already been carried so far, should be carried further if such further carrying were found practicable.
    "Can You Forgive Her?", Anthony Trollope.
  3. For this is the chalice in My Blood of the new and everlasting testament, the mystery of faith, which shall be shed for you and for many, for the remission of sins.
    "Church and State as Seen in the Formation of Christendom", T. W. Allies.