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unpardonable

1 ENTRIES FOUND:
unpardonable /ˌʌnˈpɑɚdn̩əbəl/ adjective
unpardonable
/ˌʌnˈpɑɚdn̩əbəl/
adjective
Britannica Dictionary definition of UNPARDONABLE
[more unpardonable; most unpardonable] formal
: too bad to be forgiven