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unbelievable

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adjective unbelievable pronunciation in British English /ˌʌnbɪˈliːvəb(ə)l/
  1. 1
    informal used for emphasizing how good, bad, impressive etc something is

    The cheering inside the stadium was unbelievable.

    Williams played an unbelievable match (=she played very well).

  2. 2
    too unlikely to be true or believed

    The acting was good, although the plot was unbelievable.

derived word

unbelievably

adverb

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