IPA: /əˈtoʊnəbl/
KK: /əˈtoʊnəbl/
Able to be forgiven or made right after a wrongdoing; something that can be atoned for.
His actions were atonable, and he sought forgiveness from those he hurt.
Atonable → It is formed from "a-" (meaning not) and "tonable" (from the root "tone" which comes from Latin "tonare", meaning to thunder or make a sound). The word "atonable" refers to something that cannot be made amends for or cannot be atoned.
Think of 'not' ('a-') being able to 'make amends' ('tonable') — that's why atonable means something that cannot be atoned.