01 a. Not capable of being brought into harmony; irreconcilable.
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1.
Not capable of being brought into harmony; irreconcilable.[Obs.]
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2.
Incapable of being atoned for; inexpiable.
Entry
2 senses
Webster, 1913
Unatonable
· Un·a·ton·a·ble
· IPA /ʌnəˈtəʊnəbəl/