definitions
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unfathomable

[ uhn-fath-uh-muh-buh l ]
/ ʌnˈfæð ə mə bəl /
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SEE MORE SYNONYMS FOR unfathomable ON THESAURUS.COM

adjective

not able to be fathomed, or completely understood; incomprehensible: heroism in the face of unfathomable conflict.
not able to be measured with a sounding line, or fathomed: unfathomable depths of the ocean.

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RELATED WORDS

Nearby words

unfamiliar, unfancied, unfashionable, unfasten, unfathered, unfathomable, unfathomed, unfavorable, unfavourable, unfavoured, unfazed
Related formsun·fath·om·a·ble·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unfathomable

British Dictionary definitions for unfathomable

unfathomable

/ (ʌnˈfæðəməbəl) /

adjective

incapable of being fathomed; immeasurable
incomprehensible
Derived Formsunfathomableness, noununfathomably, adverb
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

Word Origin and History for unfathomable

unfathomable


adj.

1610s, originally in the figurative sense, of feelings, conditions, etc., from un- (1) "not" + fathomable. Literal sense attested from 1670s. Related: Unfathomably.

Online Etymology Dictionary, © 2010 Douglas Harper