unfathomable

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ʌnˈfæðəməbəl/US:USA pronunciation: IPAUSA pronunciation: IPA/ʌnˈfæðəməbəl/


WordReference Random House Learner's Dictionary of American English © 2026
un•fath•om•a•ble /ʌnˈfæðəməbəl/USA pronunciation  adj. 
    1. that cannot be understood or explained:an unfathomable mystery.

WordReference Random House Unabridged Dictionary of American English © 2026
Collins Concise English Dictionary © HarperCollins Publishers::
unfathomable /ʌnˈfæðəməbəl/ adj
  1. incapable of being fathomed; immeasurable
  2. incapable of being understood
unˈfathomableness n unˈfathomably adv
'unfathomable' also found in these entries (note: many are not synonyms or translations):
abyss - fathomless - abstruse - abyssal - bottomless - depth - groundless - impenetrable - inscrutable - mysterious - unsearchable - soundless

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