unfathomable

English Thesaurus

1. impossible to come to understand (adj.all)

similar	:	incomprehensible, uncomprehensible,
definition	:	difficult to understand (adj.all)

2. resembling an abyss in depth; so deep as to be unmeasurable (adj.all)

similar	:	deep,
definition	:	having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination (adj.all)

3. of depth; not capable of being sounded or measured (adj.all)

similar	:	unsoundable,
definition	:	too deep to determine the depth of (adj.all)

also	:	deep,
definition	:	having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination (adj.all)

4. resembling an abyss in depth; so deep as to be unmeasurable (adj.all)

derivation	:	abysm, abyss,
definition	:	a bottomless gulf or pit; any unfathomable (or apparently unfathomable) cavity or chasm or void extending below (often used figuratively) (noun.object)

5. of depth; not capable of being sounded or measured (adj.all)

antonym	:	fathomable, plumbable, soundable,
definition	:	(of depth) capable of being sounded or measured for depth (adj.all)

6. resembling an abyss in depth; so deep as to be unmeasurable (adj.all)

derivation	:	abysm, abyss,
definition	:	a bottomless gulf or pit; any unfathomable (or apparently unfathomable) cavity or chasm or void extending below (often used figuratively) (noun.object)

7. of depth; not capable of being sounded or measured (adj.all)

antonym	:	fathomable, plumbable, soundable,
definition	:	(of depth) capable of being sounded or measured for depth (adj.all)