atone

əˈtəʊn

To make reparation, compensation, or amends for an offence or a crime.

one
"one, single, united", in Middle English (Germanic), Medieval Period, Britain
at
"at, to, towards", in Middle English (Germanic), Medieval Period, Britain

For the life of the flesh is in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that maketh an atonement for the soul.

Leviticus 17:11, KJV

Historical

atoon /atoon/

Middle English, England

atone /atone/

Middle English, England

attone /attone/

Early Modern English, England