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 Sheldon wordlessly sits with a stunned expression, processing the unfathomable loss. Bryan Alexander, USA TODAY, 10 May 2024 The price tag of deadly roads Deaths on public streets have a cost, both in terms of the unfathomable grief borne by families and the monetary cost borne by the public. Ariane Lange, Sacramento Bee, 8 May 2024 See all Example Sentences for unfathomable 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'unfathomable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 16 May. 2024.

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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