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Synonyms

unbelievably

British  
/ ˌʌnbɪˈliːvəblɪ /

adverb

  1. in a manner that is hard to believe; astonishingly

    it gets unbelievably hot

  2. (sentence modifier) it is hard to believe that; incredibly

    unbelievably, he remained utterly cheerful

"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

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.

In addition to recounting an exciting and at times almost unbelievably dramatic story, the author helps readers appreciate how Western visitors affected the delicate balance of power among indigenous cultures—sometimes forcefully, but often unwittingly.

From The Wall Street Journal • May 20, 2026

He told reporters in the Oval Office on Monday that while the ceasefire remained in place, it was "unbelievably weak".

From BBC • May 11, 2026

Thanks to “Cosmic Music,” anyone interested in her life and work doesn’t have to go comb through microfilm or ancient magazines to learn more about this unbelievably accomplished and completely fascinating human being.

From Salon • Apr. 14, 2026

"But overall, I believe technological progress can make the future unbelievably good, for your family and mine."

From Barron's • Apr. 14, 2026

It seemed unbelievably cruel to put that photo on the cover of your program for everyone to see.

From "The Thing About Jellyfish" by Ali Benjamin

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