Synonyms|288Antonyms|134|Broader|5Narrower|7Related|1.5k
1
devoid of truth(expression, idiom, error)
1
dotty
1
doubtful
1
extreme(adjective, defended, verbal attack)
1
fallible
1
fantastic
1
frivolous(adjective, poor, thin, false, empty)
1
fruitless(adjective, empty, worthless, frivolous, ineffective)
1
hazardous
1
hollow(adjective, false, unreasonable, empty, senseless)
1
hypocritical
1
inconsequent
1
inconsequential
1
incorrect
1
indecisive
1
inequitable
1
inexcusable
1
inexplicable(adjective, defended, verbal attack)
1
insignificant(adjective, empty, senseless, worthless, unwarranted)
1
insubstantial
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ChicagoSmart Define. 2015. "groundless thesaurus" https://smartdefine.org/groundless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, groundless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/groundless/thesaurus/synonyms>.
MLASmart Define. "groundless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/groundless/thesaurus/synonyms>