unfathomable

adjective

un·​fath·​om·​able ˌən-ˈfa-t͟hə-mə-bəl How to pronounce unfathomable (audio)
: not capable of being fathomed:
b
: impossible to comprehend
unfathomably adverb

Examples of unfathomable in a Sentence

His behavior is completely unfathomable. the unfathomable reaches of space
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The need for troops was unfathomable to a cluster of humanitarian volunteers from southern Arizona at a tiny aid camp east of Sasabe, Ariz., where miles of border wall abruptly come to an end at an outcropping in the Sonoran Desert. Jack Healy, New York Times, 13 Feb. 2025 The amount was unfathomable, but their plan was to reorganize and start paying off the debt, members said. Teri Sforza, Orange County Register, 9 Feb. 2025 Over the next few years, Button attempted dangerous feats that seemed unfathomable at the time but are now routine for elite skaters. Holly Yan, CNN, 31 Jan. 2025 Getting to play Glinda was the greatest gift of my life, so just to be recognized in this way for that is an unfathomable honor. Beatrice Verhoeven, The Hollywood Reporter, 23 Jan. 2025 See all Example Sentences for unfathomable 

Word History

First Known Use

1640, in the meaning defined above

Time Traveler
The first known use of unfathomable was in 1640

Dictionary Entries Near unfathomable

Cite this Entry

“Unfathomable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unfathomable. Accessed 22 Feb. 2025.

Kids Definition

unfathomable

adjective
un·​fath·​om·​able ˌən-ˈfat͟h-ə-mə-bəl How to pronounce unfathomable (audio)
: not capable of being fathomed:
b
: impossible to understand

More from Merriam-Webster on unfathomable

Last Updated: - Updated example sentences
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