Synonyms of unsubstantial

unsubstantial

adjective

ˌən-səb-ˈstan(t)-shəl 

1

as in spiritual

not composed of matter

as thin and unsubstantial as the wind

Synonyms & Similar Words

• spiritual
• incorporeal
• metaphysical
• insubstantial
• psychical
• immaterial
• supernatural
• invisible
• nonmaterial
• thin
• psychic
• nonphysical
• formless
• bodiless
• ethereal
• unbodied
• intangible
• impalpable
• tenuous
• vaporous
• gaseous
• diaphanous
• insensible
• airy
• wispish
• gossamery

Antonyms & Near Antonyms

• substantial
• physical
• corporeal
• material
• tangible
• carnal
• visible
• noticeable
• animal
• discernible
• sensible
• bodily
• solid
• observable
• detectable
• heavy
• palpable
• massive
• bulky
• fleshly
• discernable

2

as in insubstantial

being of a material lacking in sturdiness or substance

unsubstantial wisps of lace

Synonyms & Similar Words

• insubstantial
• flimsy
• gossamer
• filmy
• frothy
• fragile
• gauzy
• delicate
• sheer
• fine
• cobwebby
• sleazy
• feeble
• transparent
• gossamery
• dainty
• frail
• diaphanous

Antonyms & Near Antonyms

• substantial
• sturdy
• durable
• lasting
• tough
• heavy
• coarse
• rough
• rude
• knockabout

3

as in weak

lacking bodily strength

an unsubstantial child who was unfit to play sports of any kind

Synonyms & Similar Words

• weak
• feeble
• weakened
• frail
• faint
• slight
• soft
• asthenic
• languid
• wasted
• wimpy
• disabled
• enfeebled
• low
• tired
• infirm
• softened
• delicate
• debilitated
• paralyzed
• exhausted
• effete
• vulnerable
• fragile
• tender
• down-and-out
• wimpish
• prostrate
• incapacitated
• injured
• enervated
• invalid
• weary
• sapped
• flimsy
• challenged
• unsteady
• prostrated
• impotent
• drained
• powerless
• decrepit
• lame
• dizzy
• rocky
• damaged
• susceptible
• breakable
• impaired
• unsound
• broken-down
• woozy
• hurt
• groggy
• flagging
• worn-out
• yielding
• resistless
• unresistant
• harmed

Antonyms & Near Antonyms

• powerful
• strong
• mighty
• stout
• muscular
• rugged
• athletic
• sturdy
• sinewy
• robust
• beefy
• tough
• virile
• hard
• brawny
• stalwart
• fit
• husky
• lusty
• hardy
• vigorous
• energetic
• sound
• healthy
• able-bodied
• fortified
• hardened
• strengthened
• capable
• competent
• strapping
• energized
• hale
• red-blooded
• vitalized
• inured
• toughened
• invigorated
• recovering
• convalescing
• recuperating

Examples of unsubstantial in a Sentence

Recent Examples on the Web

Plus, researchers would still have to clear the not-unsubstantial hurdle of clearing the compound for such use in humans. —Lacy Schley, Discover Magazine, 18 July 2019