expiator means one who makes expiation or atonement. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “expiator” is a great word
EXPIATOR — [Noun] One who makes expiation or atonement. Learned borrowing from Latin expiātor, agent noun from expiāre ("to atone for, make good"). Unlike a "redeemer," which implies a salvific liberation, or a "penitent," which denotes one remorseful for their own sins, an expiator is defined by the functional and often grim work of balancing the moral ledger, frequently for another. It is the scapegoat driven into the wilderness bearing the tribe's mark, the ritual slaughter of the unblemished lamb on a cold altar, and the quiet acceptance of a punishment not one's own—the necessary, sorrowful transaction that clears a debt, but never truly erases the stain.
noun
- One who makes expiation or atonement.