4
inexcusably
3
untenably(adverb, invalidly)
2
indefensible
2
unjustifiably(adverb, basis)
2
unquestionably(adverb, doubt, certainly, undeniably, indisputably)
2
unwarrantably
1
baselessly
1
defenselessly
1
excessively
1
groundlessly
1
harmlessly
1
idly
1
invalidly(adverb, unsteadily)
1
partially
1
shakily(adverb, unsteadily, invalidly)
1
unevenly
1
unfoundedly
1
weakly(adverb, invalidly)
1
wrongly(adverb, illicitly, unlawfully, inexcusably, unpardonably)
0
absolutely(adverb, definitely, undeniably, indisputably)
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APASmart Define. (2015). indefensibly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/indefensibly/thesaurus/synonyms
ChicagoSmart Define. 2015. "indefensibly thesaurus" https://smartdefine.org/indefensibly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, indefensibly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/indefensibly/thesaurus/synonyms>.
MLASmart Define. "indefensibly thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/indefensibly/thesaurus/synonyms>