: not capable of being fathomed:
a : immeasurable
b : impossible to comprehend
— un·fath·om·ably\-blē\ adverb
Examples of UNFATHOMABLE
- His behavior is completely unfathomable.
- <the unfathomable reaches of space>
First Known Use of UNFATHOMABLE
Related to UNFATHOMABLE
- bottomless, boundless, endless, fathomless, horizonless, illimitable, immeasurable, immensurable, indefinite, limitless, measureless, unbounded, infinite, unlimited
- bounded, circumscribed, confined, definite, finite, limited, restricted
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