English Explanatory Dictionary

unfathomable

English dictionary entry

Meanings

adj
  1. Impossible to fathom.
  2. Especially of depth: physically incapable of being measured; immeasurable.
  3. Impossible to grasp the extent of, or to fully know or understand.

Pronunciation

/(ˌ)ʌnˈfæðəməbl̩/ /ʌnˈfæðm̩əbl̩/ LL-Q1860 (eng)-Vealhurl-unfathomable.wav /ˌʌnˈfæð(ə)məb(ə)l/

Word forms

unfathomable more unfathomable most unfathomable

Etymology

From un- (prefix meaning ‘not’) + fathom (“to measure the depth of (water); (figurative) to deeply understand (someone or something)”) + -able (suffix forming adjectives denoting things not able or fit to be done).

Synonyms

abyssal incalculable inestimable soundless unplumbable unsoundable bottomless fathomless impenetrable unintelligible abstruse Chinese dense enigmatic Greek inapprehensible incognizable incomprehensible ineffable inenubilable inexplicable insensible inscrutable insoluble insolvable mysterious nonunderstandable obscure retruse tenebrose thick undecipherable undiscoverable unexplainable unfathomable ungraspable unknowable ununderstandable

Antonyms

calculable estimable fathomable measurable plumbable soundable explicable intelligible penetrable understandable apprehensible clear limpid comprehensible explainable explicatable graspable illuminable lucid pellucid perspicuous straightforward tangible

Related words

fathom fathomable fathomless unfathomed inconceivable unimaginable

Derived words

unfathomability unfathomableness unfathomably
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