Also found in: Thesaurus.
Related to expiator: atone
v. ex·pi·at·ed, ex·pi·at·ing, ex·pi·ates
To make amends or reparation for; atone for: expiate one's sins by acts of penance.
To make amends; atone.
[Latin expiāre, expiāt- : ex-, intensive pref.; see ex- + piāre, to atone (from pius, devout).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.