un·​fath·​om·​able | \ ˌən-ˈfa-t͟hə-mə-bəl How to pronounce unfathomable (audio) \

Definition of unfathomable

: not capable of being fathomed:
b : impossible to comprehend

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Other Words from unfathomable

unfathomably \ ˌən-​ˈfa-​t͟hə-​mə-​blē How to pronounce unfathomably (audio) \ adverb

Examples of unfathomable in a Sentence

His behavior is completely unfathomable. the unfathomable reaches of space

Recent Examples on the Web

An underdog story that even now seems unfathomable. SI.com, "Claudio Ranieri: A Ridiculed Tinkerman Who Masterminded One of Football's Greatest Ever Achievements," 12 June 2019 The decision to undercut index pioneer Vanguard Group on cost may have once seemed unfathomable inside Fidelity’s Boston headquarters. WSJ, "The Money Managers to Watch in 2019," 1 Jan. 2019 Image Henrik Lundqvist remembers June 2000 for reasons that seem unfathomable in 2018. Allan Kreda, New York Times, "The Lundqvist Era Started in the 7th Round. Where Will the Rangers Find a New Foundation?," 22 June 2018 Argott and Joyce subordinate these more pressing political questions to a mirror-box exploration of the nature of truth and the unfathomable secrets of the soul. Peter Keough, BostonGlobe.com, "In Focus: Back to a future that didn’t go according to plan," 20 June 2019 Why anyone would try to pick a fight with someone as strong as Johnson is unfathomable, but commenters must be feeling brave. Marisa Lascala, Good Housekeeping, "People Are Criticizing Dwayne 'The Rock' Johnson Over Instagram Photo of His Daughter Swimming," 10 June 2019 The cost of inaction on climate change is unfathomable. Jon Goldin-dubois, The Denver Post, "Guest Commentary: Colorado, and others in the West, lead the way on reducing carbon emissions," 4 June 2019 Thinking of doing one of my typical workouts was unfathomable. Cassie Shortsleeve, SELF, "Trying to Work Out During My First Trimester Was the Humbling Experience I Didn't Know I Needed," 17 Mar. 2019 While that normally might seem unfathomable, last year the Academy snubbed Oprah Winfrey so simply being a big name may just not be enough if the project isn't also extremely buzzy in this time of peak TV. Danielle Turchiano, chicagotribune.com, "Emmy nominations: The biggest snubs and surprises," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unfathomable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unfathomable

1640, in the meaning defined above

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Statistics for unfathomable

Last Updated

7 Jul 2019

Look-up Popularity

Time Traveler for unfathomable

The first known use of unfathomable was in 1640

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More Definitions for unfathomable



English Language Learners Definition of unfathomable

literary : impossible to understand

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Comments on unfathomable

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