Main entry: unfathomable
Definition: of depth; not capable of being sounded or measured
Antonyms: plumbable, fathomable, soundable
Definition: (of depth) capable of being sounded or measured for depth
Main entry: abysmal, abyssal, unfathomable
Definition: resembling an abyss in depth; so deep as to be unmeasurable
Usage: the abyssal depths of the ocean
Antonyms: shallow
Definition: lacking physical depth; having little spatial extension downward or inward from an outer surface or backward or outward from a center
Antonyms: shallow
Definition: not deep or strong; not affecting one deeply
Main entry: unfathomable
Definition: impossible to come to understand
Antonyms: comprehendible, comprehensible
Definition: capable of being comprehended or understood