unfathomable
adjective
un·fath·om·able
ˌən-ˈfa-t͟hə-mə-bəl 
: not capable of being fathomed:
a
: immeasurable
… the unfathomable darkness of empty space.—
H. G. Wells
H. G. Wells
b
: impossible to comprehend
unfathomable motives/reasons
Examples of unfathomable in a Sentence
His behavior is completely unfathomable.
the unfathomable reaches of space
Recent Examples on the Web
Kobe Bryant January 2020 had one of the darkest and most unfathomable moments in sports.
—Ryan Gaydos, FOXNews.com, 22 Dec. 2025
Inequality grew, especially at the very top, where individuals amassed unfathomable wealth (hundreds of billions of dollars) and some corporate valuations hit unreal heights ($4 trillion to $5 trillion).
—Andrew Winston, Fortune, 21 Dec. 2025
While antisemitic incidents had been on the rise in Australia, survivors say that an attack of this scale was largely unfathomable, given the stringent gun control laws in Australia.
—Sara James, NBC news, 16 Dec. 2025
Remaining hopeful during times of tragedy Sharabi said finding light during unfathomable darkness is what has gotten him through in the days following the tragedy in Australia.
—Anna McAllister, CBS News, 16 Dec. 2025
See All Example Sentences for unfathomable
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Ryan Gaydos, FOXNews.com, 22 Dec. 2025
Inequality grew, especially at the very top, where individuals amassed unfathomable wealth (hundreds of billions of dollars) and some corporate valuations hit unreal heights ($4 trillion to $5 trillion).
—Andrew Winston, Fortune, 21 Dec. 2025
While antisemitic incidents had been on the rise in Australia, survivors say that an attack of this scale was largely unfathomable, given the stringent gun control laws in Australia.
—Sara James, NBC news, 16 Dec. 2025
Remaining hopeful during times of tragedy Sharabi said finding light during unfathomable darkness is what has gotten him through in the days following the tragedy in Australia.
—Anna McAllister, CBS News, 16 Dec. 2025
See All Example Sentences for unfathomable
Cite this Entry
“Unfathomable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unfathomable. Accessed 31 Dec. 2025.
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unfathomable
adjective
un·fath·om·able
ˌən-ˈfat͟h-ə-mə-bəl
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