2
baselessly
2
causelessly
2
falsely
2
gratuitously
2
motivelessly
2
unfoundedly(adverb, reason)
2
unjustifiedly
2
unwarrantedly(adverb, reason)
1
apocryphally
1
blinded
1
deadly
1
erroneously
1
fallaciously
1
idly
1
unjustifiably(adverb, basis)
1
unprovokedly
1
unsubstantiatedly
1
wantonly
0
absurdly
0
become tangled(expression, idiom)
13 years ago|1.4k views|share |citing 
APASmart Define. (2013). groundlessly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/groundlessly/thesaurus/synonyms
ChicagoSmart Define. 2013. "groundlessly thesaurus" https://smartdefine.org/groundlessly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, groundlessly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/groundlessly/thesaurus/synonyms>.
MLASmart Define. "groundlessly thesaurus" 19 May 2013. Web. 21 September 2026. <https://smartdefine.org/groundlessly/thesaurus/synonyms>