1. (adj)unfathomable of depth; not capable of being sounded or measured Synonyms: abysmal, abyssal Antonyms: comprehensible, fathomable, shallow, comprehendible, soundable, plumbable
2. (adj)abysmal, abyssal, unfathomable resembling an abyss in depth; so deep as to be unmeasurable Synonyms: abysmal, unfathomable, abyssal Antonyms: fathomable, soundable, shallow, comprehendible, plumbable, comprehensible
3. (adj)unfathomable impossible to come to understand Synonyms: abysmal, abyssal Antonyms: comprehensible, fathomable, soundable, comprehendible, shallow, plumbable
Synonyms, Thesaurus & Antonyms of 'unfathomable'
English Synonyms and Antonyms
1. unfathomable Infinite (L. in, not, and finis, limit) signifies without bounds or limits in any way, and may be applied to space, time, quantity, or number. Countless, innumerable, and numberless, whic Synonyms: infinite, absolute, illimitable, limitless, unconditioned, boundless, immeasurable, measureless, unfathomable, countless, innumerable, numberless, unlimited, eternal, interminable, unbounded, unmeasured Antonyms: bounded, finite, measurable, restricted, small, brief, limited, moderate, shallow, transient, circumscribed, little, narrow, short, transitory, evanescent
Synonyms for unfathomable 
