English

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Etymology

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From unpardonable +‎ -ly.

Adverb

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unpardonably (comparative more unpardonably, superlative most unpardonably)

  1. In an unpardonable manner.
    • 1986 December 21, F. Jay Deacon, “Emotionally-Laden Prejudice”, in Gay Community News, volume 14, number 23, page 4:
      The assertion that homosexuality threatens the lives and well-being of the public because it leads to AIDS is unpardonably remote from the facts. Indeed, the far more devastating AIDS epidemic in East and Central Africa is being spread almost exclusively through "normal" heterosexual intercourse.