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in-substantial
adjective as in inadequate
Strongest matches
Weak matches
adjective as in insecure
adjective as in insubstantial
adjective as in jerry-built
adjective as in light
adjective as in meager
Strong match
adjective as in meaningless
Strongest matches
adjective as in metaphysical
Weak matches
- bodiless
- deep
- difficult
- discarnate
- eternal
- fundamental
- high-flown
- ideal
- immaterial
- impalpable
- incorporeal
- insubstantial
- intangible
- intellectual
- jesuitic
- nonmaterial
- nonphysical
- numinous
- oversubtle
- preternatural
- profound
- recondite
- superhuman
- superior
- supermundane
- suprahuman
- supramundane
- supranatural
- transcendental
- unearthly
- unfleshly
- universal
- unphysical
- unreal
- unsubstantial
adjective as in nonexistent
Weak matches
- airy
- baseless
- blank
- chimerical
- dead
- defunct
- departed
- dreamlike
- dreamy
- empty
- ethereal
- extinct
- extinguished
- fancied
- few and far between
- flimsy
- gone
- gossamery
- groundless
- hallucinatory
- hypothetical
- illusory
- imaginary
- imagined
- immaterial
- imponderable
- insubstantial
- legendary
- lost
- missing
- mythical
- null
- null and void
- passed away
- passed on
- perished
- shadowy
- ungrounded
- unreal
- unsubstantial
- vague
- vaporous
- void
- without foundation
adjective as in pale
adjective as in paper
Strong matches
Weak matches
adjective as in piddly
adjective as in slender/slim
adjective as in slight
Strongest matches
adjective as in tenuous
adjective as in thin
adjective as in transient/transitory
adjective as in unreal
Strongest matches
Strong matches
adjective as in unsound
Strongest matches
adjective as in weak
Strongest matches
Weak matches
adjective as in imagined
adjective as in transient
Strongest matches
adjective as in vaporous
adjective as in bodiless
adjective as in nonphysical
Weak matches
- aerial
- airy
- apparitional
- asomatous
- bodiless
- celestial
- disbodied
- discarnate
- disembodied
- dreamlike
- dreamy
- ethereal
- ghostly
- heavenly
- impalpable
- imponderable
- incorporate
- incorporeal
- insensible
- insubstantial
- intangible
- metaphysical
- nonmaterial
- psychic
- shadowy
- spectral
- spiritlike
- spiritual
- subjective
- supernatural
- unbodied
- uncorporal
- unearthly
- unembodied
- unfleshly
- unsubstantial
- unworldly
- wraithlike
adjective as in scant
adjective as in tottering
adjective as in tottery
adjective as in unbodied
Weak matches
- aerial
- airy
- apparitional
- asomatous
- bodiless
- celestial
- disbodied
- discarnate
- disembodied
- dreamlike
- dreamy
- ethereal
- ghostly
- heavenly
- impalpable
- imponderable
- incorporate
- incorporeal
- insensible
- insubstantial
- intangible
- metaphysical
- nonmaterial
- nonphysical
- psychic
- shadowy
- spectral
- spiritlike
- spiritual
- subjective
- supernatural
- uncorporal
- unearthly
- unembodied
- unfleshly
- unsubstantial
- unworldly
- wraithlike
adjective as in uncorporal
Weak matches
- aerial
- airy
- apparitional
- asomatous
- bodiless
- celestial
- disbodied
- discarnate
- disembodied
- dreamlike
- dreamy
- ethereal
- ghostly
- heavenly
- impalpable
- imponderable
- incorporate
- incorporeal
- insensible
- insubstantial
- intangible
- metaphysical
- nonmaterial
- nonphysical
- psychic
- shadowy
- spectral
- spiritlike
- spiritual
- subjective
- supernatural
- unbodied
- unearthly
- unembodied
- unfleshly
- unsubstantial
- unworldly
- wraithlike
adjective as in waterish
adjective as in weakly
adjective as in weightless
Strongest matches
Weak matches
- agile
- airy
- atmospheric
- buoyant
- crumbly
- dainty
- delicate
- downy
- easy
- effervescent
- featherweight
- feathery
- filmy
- flimsy
- floatable
- floating
- fluffy
- friable
- frothy
- gossamery
- graceful
- imponderous
- insubstantial
- light as a feather
- light-footed
- lightweight
- lithe
- little
- loose
- meager
- nimble
- petty
- porous
- portable
- sandy
- sheer
- slender
- slight
- small
- spongy
- sprightly
- sylphlike
- thin
- tissuelike
- trifling
- unheavy
- unsubstantial
adjective as in decrepit
Strongest matches
adjective as in elusive
adjective as in ethereal
adjective as in feeble
Strongest matches
Weak matches
- aged
- chicken
- debilitated
- delicate
- doddering
- dopey
- effete
- emasculated
- enervated
- enfeebled
- epicene
- etiolated
- exhausted
- failing
- faint
- flat
- gentle
- helpless
- impotent
- inadequate
- indecisive
- ineffectual
- insubstantial
- insufficient
- languid
- low
- out of gas
- poor
- powerless
- sapless
- slight
- strengthless
- thin
- unconvincing
- vitiated
- weakly
- wimpy
- woozy
- zero
adjective as in filmy
adjective as in flimsy
adjective as in fragile
adjective as in frail
adjective as in gauzy
Strongest match
adjective as in ghostly
adjective as in impalpable
adjective as in inadequate
Strongest matches
Weak matches
adjective as in insecure
adjective as in insubstantial
adjective as in jerry-built
adjective as in light
adjective as in meager
Strong match
adjective as in meaningless
Strongest matches
adjective as in metaphysical
Weak matches
- bodiless
- deep
- difficult
- discarnate
- eternal
- fundamental
- high-flown
- ideal
- immaterial
- impalpable
- incorporeal
- insubstantial
- intangible
- intellectual
- jesuitic
- nonmaterial
- nonphysical
- numinous
- oversubtle
- preternatural
- profound
- recondite
- superhuman
- superior
- supermundane
- suprahuman
- supramundane
- supranatural
- transcendental
- unearthly
- unfleshly
- universal
- unphysical
- unreal
- unsubstantial
adjective as in nonexistent
Weak matches
- airy
- baseless
- blank
- chimerical
- dead
- defunct
- departed
- dreamlike
- dreamy
- empty
- ethereal
- extinct
- extinguished
- fancied
- few and far between
- flimsy
- gone
- gossamery
- groundless
- hallucinatory
- hypothetical
- illusory
- imaginary
- imagined
- immaterial
- imponderable
- insubstantial
- legendary
- lost
- missing
- mythical
- null
- null and void
- passed away
- passed on
- perished
- shadowy
- ungrounded
- unreal
- unsubstantial
- vague
- vaporous
- void
- without foundation
adjective as in pale
adjective as in paper
Strong matches
Weak matches
adjective as in piddly
adjective as in slender/slim
adjective as in slight
Strongest matches
adjective as in tenuous
adjective as in thin
adjective as in transient/transitory
adjective as in unreal
Strongest matches
Strong matches
adjective as in unsound
Strongest matches
adjective as in weak
Strongest matches
Weak matches
adjective as in imagined
adjective as in transient
Strongest matches
adjective as in vaporous
adjective as in bodiless
adjective as in nonphysical
Weak matches
- aerial
- airy
- apparitional
- asomatous
- bodiless
- celestial
- disbodied
- discarnate
- disembodied
- dreamlike
- dreamy
- ethereal
- ghostly
- heavenly
- impalpable
- imponderable
- incorporate
- incorporeal
- insensible
- insubstantial
- intangible
- metaphysical
- nonmaterial
- psychic
- shadowy
- spectral
- spiritlike
- spiritual
- subjective
- supernatural
- unbodied
- uncorporal
- unearthly
- unembodied
- unfleshly
- unsubstantial
- unworldly
- wraithlike
adjective as in scant
adjective as in tottering
adjective as in tottery
adjective as in unbodied
Weak matches
- aerial
- airy
- apparitional
- asomatous
- bodiless
- celestial
- disbodied
- discarnate
- disembodied
- dreamlike
- dreamy
- ethereal
- ghostly
- heavenly
- impalpable
- imponderable
- incorporate
- incorporeal
- insensible
- insubstantial
- intangible
- metaphysical
- nonmaterial
- nonphysical
- psychic
- shadowy
- spectral
- spiritlike
- spiritual
- subjective
- supernatural
- uncorporal
- unearthly
- unembodied
- unfleshly
- unsubstantial
- unworldly
- wraithlike
adjective as in uncorporal
Weak matches
- aerial
- airy
- apparitional
- asomatous
- bodiless
- celestial
- disbodied
- discarnate
- disembodied
- dreamlike
- dreamy
- ethereal
- ghostly
- heavenly
- impalpable
- imponderable
- incorporate
- incorporeal
- insensible
- insubstantial
- intangible
- metaphysical
- nonmaterial
- nonphysical
- psychic
- shadowy
- spectral
- spiritlike
- spiritual
- subjective
- supernatural
- unbodied
- unearthly
- unembodied
- unfleshly
- unsubstantial
- unworldly
- wraithlike
adjective as in waterish
adjective as in weakly
adjective as in weightless
Strongest matches
Weak matches
- agile
- airy
- atmospheric
- buoyant
- crumbly
- dainty
- delicate
- downy
- easy
- effervescent
- featherweight
- feathery
- filmy
- flimsy
- floatable
- floating
- fluffy
- friable
- frothy
- gossamery
- graceful
- imponderous
- insubstantial
- light as a feather
- light-footed
- lightweight
- lithe
- little
- loose
- meager
- nimble
- petty
- porous
- portable
- sandy
- sheer
- slender
- slight
- small
- spongy
- sprightly
- sylphlike
- thin
- tissuelike
- trifling
- unheavy
- unsubstantial
adjective as in decrepit
Strongest matches
adjective as in elusive
adjective as in ethereal
adjective as in feeble
Strongest matches
Weak matches
- aged
- chicken
- debilitated
- delicate
- doddering
- dopey
- effete
- emasculated
- enervated
- enfeebled
- epicene
- etiolated
- exhausted
- failing
- faint
- flat
- gentle
- helpless
- impotent
- inadequate
- indecisive
- ineffectual
- insubstantial
- insufficient
- languid
- low
- out of gas
- poor
- powerless
- sapless
- slight
- strengthless
- thin
- unconvincing
- vitiated
- weakly
- wimpy
- woozy
- zero
adjective as in filmy
adjective as in flimsy
adjective as in fragile
adjective as in frail
adjective as in gauzy
Strongest match
adjective as in ghostly
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Synonym of the day
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On this page you'll find 1652 synonyms, antonyms, and words related to in-substantial, such as: deficient, faulty, incompetent, incomplete, lacking, and meager.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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