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synonyms for un substantial

  • fanciful
  • implausible
  • rare
  • unbelievable
  • unlikely
  • doubtful
  • dubious
  • far-fetched
  • flimsy
  • hundred-to-one
  • iffy
  • inconceivable
  • not expected
  • outside chance
  • questionable
  • slim
  • slim and none
  • uncertain
  • unconvincing
  • unheard of
  • unimaginable
  • unsubstantial
  • weak
  • fanciful
  • flimsy
  • illusory
  • puny
  • tenuous
  • unreal
  • unsubstantial
  • aerial
  • airy
  • chimerical
  • decrepit
  • ephemeral
  • false
  • feeble
  • fly-by-night
  • fragile
  • frail
  • idle
  • immaterial
  • imponderable
  • incorporeal
  • infirm
  • intangible
  • metaphysical
  • petty
  • poor
  • slender
  • slight
  • thin
  • too little too late
  • unsound

antonyms for un substantial

MOST RELEVANT
  • believable
  • likely
  • ordinary
  • plausible
  • probably
  • real
  • ostensible
  • possible
  • probable
  • tenable
                      Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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