unforgivably
adverb/ˌʌnfəˈɡɪvəbli/
/ˌʌnfərˈɡɪvəbli/
- in a way that is so bad or unacceptable that you cannot forgive it synonym inexcusably
- He was unforgivably rude.
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unforgivably
Definition of unforgivably adverb from the Oxford Advanced Learner's Dictionary