Unfathomable
ahd-5
adjective.
Difficult or impossible to understand; incomprehensible.
adjective.
Difficult or impossible to measure.
The Century Dictionary and Cyclopedia
Incapable of being fathomed or sounded; too deep to be measured; hence, not capable of being sounded by thought or comprehended.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
impossible to
fathom
or
understand
;
incomprehensible
adjective.
difficult to penetrate.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
of depth; not capable of being sounded or measured
adjective.
resembling an abyss in depth; so deep as to be unmeasurable
adjective.
impossible to come to understand
Word Usage
"When he looked up, his wife was staring down at him, her expression unfathomable in the darkness."
Antonyms
Words with the opposite meaning
fathomable
cross-reference
inconceivable
unfathomed
unimaginable
unintelligible
Equivalent
deep
incomprehensible
uncomprehensible
unsoundable
Rhyme
Words with the same terminal sound
fathomable
Same Context
Words that are found in similar contexts
baffle
boundless
fathomless
immeasurable
impenetrable
Synonym
Words with the same meaning
Greek to one
abysmal
abyssal
all-comprehensive
all-inclusive