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Synonyms

unbelievable

American  
[uhn-bi-lee-vuh-buhl] / ˌʌn bɪˈli və bəl /

adjective

  1. too dubious or improbable to be believed.

    an unbelievable excuse.

  2. so remarkable as to strain credulity; extraordinary.

    the unbelievable fury of the storm; an unbelievable athlete.


unbelievable British  
/ ˌʌnbɪˈliːvəbəl /

adjective

  1. unable to be believed; incredible or astonishing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • unbelievability noun
  • unbelievably adverb

Etymology

Origin of unbelievable

First recorded in 1540–50; un- 1 + believe ( def. ) + -able ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Does that sound fantastical? Yes, it totally sounds fantastical. That’s why it’s obscene and conspicuous and unbelievable, because it’s probably never going to happen.”

From Barron's

“Does that sound fantastical? Yes, it totally sounds fantastical. That’s why it’s obscene and conspicuous and unbelievable, because it’s probably never going to happen.”

From Barron's

"He's learning on the job, which is an unbelievable effort," added Cook.

From BBC

"It's unbelievable," legendary Class of '92 member and former United head of academy Nicky Butt told the Times in an interview in October.

From BBC

Many were still absorbing the almost unbelievable turn of events that has surely transformed the nation’s future — albeit in still unpredictable ways.

From Los Angeles Times