Part of speech:
Not comprehensible; that cannot be understood; obscure or unintelligible
Capable of eliciting belief or trust.
Having no bounds; unlimited; vast
1667, John Milton, Paradise Lost:
Impossible to know, especially being beyond the range of human experience or understanding:
The definition of mysterious is something that is not understood or known.
Too deep to be measured:
Not simple; involved or complicated
Immersed, submerged (in).
That cannot be measured; boundless
That cannot be easily understood; completely obscure or mysterious; unfathomable; enigmatic
Very large or wide (literally or figuratively).
Readily comprehended or understood; intelligible.
The definition of impenetrable is cannot be passed through or solved.
Not intelligible; that cannot be understood; incomprehensible
Incapable of being grasped by the intellect or understanding
Designating or of the ecological zone (abyssal zone) along the deep ocean floor between the bathyal and hadal zones
Find another word for unfathomable. In this page you can discover 34 synonyms, antonyms, idiomatic expressions, and related words for unfathomable, like: incomprehensible, fathomable, believable, boundless, unending, abstruse, unknowable, enigmatic, eternal, mysterious and abysmal.