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un-fathomable
adjective as in incomprehensible
Strongest matches
adjective as in inexplicable
adjective as in inscrutable
adjective as in insoluble
adjective as in limitless
adjective as in mysterious
Strongest matches
adjective as in obscure
Weak matches
adjective as in opaque
adjective as in abstruse
adjective as in puzzling
adjective as in abysmal
adjective as in baffling
adjective as in supernatural
Strongest matches
adjective as in unaccountable
adjective as in unfathomable
Strongest matches
adjective as in unfathomable
adjective as in unintelligible
adjective as in bottomless
Weak matches
adjective as in enigmatic
adjective as in over one's head
adjective as in illimitable
Weak matches
- amaranthine
- boundless
- ceaseless
- constant
- continual
- continuous
- countless
- deathless
- enduring
- eternal
- everlasting
- immeasurable
- immortal
- incalculable
- incessant
- indeterminate
- infinite
- interminable
- limitless
- measureless
- monotonous
- multitudinous
- never-ending
- no end of
- no end to
- numberless
- overlong
- perpetual
- self-perpetuating
- unbounded
- unbroken
- undivided
- undying
- unending
- unfathomable
- uninterrupted
- unlimited
- unsurpassable
- untold
- without end
adjective as in measureless
Weak matches
- amaranthine
- boundless
- ceaseless
- constant
- continual
- continuous
- countless
- deathless
- enduring
- eternal
- everlasting
- illimitable
- immeasurable
- immortal
- incalculable
- incessant
- indeterminate
- infinite
- interminable
- limitless
- monotonous
- multitudinous
- never-ending
- no end of
- no end to
- numberless
- overlong
- perpetual
- self-perpetuating
- unbounded
- unbroken
- undivided
- undying
- unending
- unfathomable
- uninterrupted
- unlimited
- unsurpassable
- untold
- without end
adjective as in mystifying
Strongest matches
adjective as in superphysical
Weak matches
- abnormal
- celestial
- concealed
- dark
- extramundane
- extrasensory
- fabulous
- fairy
- ghostly
- heavenly
- hidden
- impenetrable
- invisible
- legendary
- metaphysical
- miraculous
- mystic
- mythical
- mythological
- numinous
- obscure
- occult
- paranormal
- phantom
- phenomenal
- preternatural
- psychic
- rare
- secret
- spectral
- superhuman
- superior
- supermundane
- superordinary
- supersensible
- supranatural
- transcendental
- uncanny
- uncomprehensible
- unearthly
- unfathomable
- unintelligible
- unknowable
- unknown
- unnatural
- unrevealed
- unusual
adjective as in supersensible
Weak matches
- abnormal
- celestial
- concealed
- dark
- extramundane
- extrasensory
- fabulous
- fairy
- ghostly
- heavenly
- hidden
- impenetrable
- invisible
- legendary
- metaphysical
- miraculous
- mystic
- mythical
- mythological
- numinous
- obscure
- occult
- paranormal
- phantom
- phenomenal
- preternatural
- psychic
- rare
- secret
- spectral
- superhuman
- superior
- supermundane
- superordinary
- superphysical
- supranatural
- transcendental
- uncanny
- uncomprehensible
- unearthly
- unfathomable
- unintelligible
- unknowable
- unknown
- unnatural
- unrevealed
- unusual
adjective as in unbounded
Weak matches
- amaranthine
- boundless
- ceaseless
- constant
- continual
- continuous
- countless
- deathless
- enduring
- eternal
- everlasting
- illimitable
- immeasurable
- immortal
- incalculable
- incessant
- indeterminate
- infinite
- interminable
- limitless
- measureless
- monotonous
- multitudinous
- never-ending
- no end of
- no end to
- numberless
- overlong
- perpetual
- self-perpetuating
- unbroken
- undivided
- undying
- unending
- unfathomable
- uninterrupted
- unlimited
- unsurpassable
- untold
- without end
adjective as in uncomprehensible
Weak matches
adjective as in unexplainable
adjective as in complex
Weak matches
- abstruse
- bewildering
- circuitous
- confused
- crabbed
- cryptic
- Daedalean
- discursive
- disordered
- enigmatic
- entangled
- excursive
- Gordian
- hidden
- impenetrable
- inscrutable
- interwoven
- involved
- jumbled
- knotted
- knotty
- labyrinthine
- mazy
- meandering
- mingled
- mixed
- muddled
- paradoxical
- puzzling
- rambling
- recondite
- round-about
- sinuous
- snarled
- tangled
- tortuous
- undecipherable
- unfathomable
adjective as in cryptic
adjective as in deep
adjective as in difficult
Strongest matches
Weak matches
- abstract
- abstruse
- baffling
- bewildering
- confounding
- dark
- deep
- enigmatic
- enigmatical
- entangled
- esoteric
- formidable
- hard to explain
- hard to solve
- hidden
- inexplicable
- intricate
- involved
- knotty
- labyrinthine
- loose
- meandering
- mysterious
- mystical
- mystifying
- nice
- obscure
- obstinate
- paradoxical
- perplexing
- problematical
- profound
- puzzling
- rambling
- subtle
- tangled
- thorny
- ticklish
- unclear
- unfathomable
- unintelligible
- vexing
adjective as in endless
Strongest matches
adjective as in enigmatic/enigmatical
adjective as in grandiose
adjective as in immeasurable
adjective as in impenetrable
adjective as in incomprehensible
Strongest matches
adjective as in inexplicable
adjective as in inscrutable
adjective as in insoluble
adjective as in limitless
adjective as in mysterious
Strongest matches
adjective as in obscure
Weak matches
adjective as in opaque
adjective as in abstruse
adjective as in puzzling
adjective as in abysmal
adjective as in baffling
adjective as in supernatural
Strongest matches
adjective as in unaccountable
adjective as in unfathomable
Strongest matches
adjective as in unfathomable
adjective as in unintelligible
adjective as in bottomless
Weak matches
adjective as in enigmatic
adjective as in over one's head
adjective as in illimitable
Weak matches
- amaranthine
- boundless
- ceaseless
- constant
- continual
- continuous
- countless
- deathless
- enduring
- eternal
- everlasting
- immeasurable
- immortal
- incalculable
- incessant
- indeterminate
- infinite
- interminable
- limitless
- measureless
- monotonous
- multitudinous
- never-ending
- no end of
- no end to
- numberless
- overlong
- perpetual
- self-perpetuating
- unbounded
- unbroken
- undivided
- undying
- unending
- unfathomable
- uninterrupted
- unlimited
- unsurpassable
- untold
- without end
adjective as in measureless
Weak matches
- amaranthine
- boundless
- ceaseless
- constant
- continual
- continuous
- countless
- deathless
- enduring
- eternal
- everlasting
- illimitable
- immeasurable
- immortal
- incalculable
- incessant
- indeterminate
- infinite
- interminable
- limitless
- monotonous
- multitudinous
- never-ending
- no end of
- no end to
- numberless
- overlong
- perpetual
- self-perpetuating
- unbounded
- unbroken
- undivided
- undying
- unending
- unfathomable
- uninterrupted
- unlimited
- unsurpassable
- untold
- without end
adjective as in mystifying
Strongest matches
adjective as in superphysical
Weak matches
- abnormal
- celestial
- concealed
- dark
- extramundane
- extrasensory
- fabulous
- fairy
- ghostly
- heavenly
- hidden
- impenetrable
- invisible
- legendary
- metaphysical
- miraculous
- mystic
- mythical
- mythological
- numinous
- obscure
- occult
- paranormal
- phantom
- phenomenal
- preternatural
- psychic
- rare
- secret
- spectral
- superhuman
- superior
- supermundane
- superordinary
- supersensible
- supranatural
- transcendental
- uncanny
- uncomprehensible
- unearthly
- unfathomable
- unintelligible
- unknowable
- unknown
- unnatural
- unrevealed
- unusual
adjective as in supersensible
Weak matches
- abnormal
- celestial
- concealed
- dark
- extramundane
- extrasensory
- fabulous
- fairy
- ghostly
- heavenly
- hidden
- impenetrable
- invisible
- legendary
- metaphysical
- miraculous
- mystic
- mythical
- mythological
- numinous
- obscure
- occult
- paranormal
- phantom
- phenomenal
- preternatural
- psychic
- rare
- secret
- spectral
- superhuman
- superior
- supermundane
- superordinary
- superphysical
- supranatural
- transcendental
- uncanny
- uncomprehensible
- unearthly
- unfathomable
- unintelligible
- unknowable
- unknown
- unnatural
- unrevealed
- unusual
adjective as in unbounded
Weak matches
- amaranthine
- boundless
- ceaseless
- constant
- continual
- continuous
- countless
- deathless
- enduring
- eternal
- everlasting
- illimitable
- immeasurable
- immortal
- incalculable
- incessant
- indeterminate
- infinite
- interminable
- limitless
- measureless
- monotonous
- multitudinous
- never-ending
- no end of
- no end to
- numberless
- overlong
- perpetual
- self-perpetuating
- unbroken
- undivided
- undying
- unending
- unfathomable
- uninterrupted
- unlimited
- unsurpassable
- untold
- without end
adjective as in uncomprehensible
Weak matches
adjective as in unexplainable
adjective as in complex
Weak matches
- abstruse
- bewildering
- circuitous
- confused
- crabbed
- cryptic
- Daedalean
- discursive
- disordered
- enigmatic
- entangled
- excursive
- Gordian
- hidden
- impenetrable
- inscrutable
- interwoven
- involved
- jumbled
- knotted
- knotty
- labyrinthine
- mazy
- meandering
- mingled
- mixed
- muddled
- paradoxical
- puzzling
- rambling
- recondite
- round-about
- sinuous
- snarled
- tangled
- tortuous
- undecipherable
- unfathomable
adjective as in cryptic
adjective as in deep
adjective as in difficult
Strongest matches
Weak matches
- abstract
- abstruse
- baffling
- bewildering
- confounding
- dark
- deep
- enigmatic
- enigmatical
- entangled
- esoteric
- formidable
- hard to explain
- hard to solve
- hidden
- inexplicable
- intricate
- involved
- knotty
- labyrinthine
- loose
- meandering
- mysterious
- mystical
- mystifying
- nice
- obscure
- obstinate
- paradoxical
- perplexing
- problematical
- profound
- puzzling
- rambling
- subtle
- tangled
- thorny
- ticklish
- unclear
- unfathomable
- unintelligible
- vexing
adjective as in endless
Strongest matches
adjective as in enigmatic/enigmatical
adjective as in grandiose
adjective as in immeasurable
adjective as in impenetrable
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Synonym of the day
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On this page you'll find 1342 synonyms, antonyms, and words related to un-fathomable, such as: baffling, impenetrable, inconceivable, mystifying, opaque, and puzzling.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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