10
inexcusably(adverb, basis, unpardonably, unforgivably)
4
unduly
3
unforgivably(adverb, inexcusably, unpardonably)
3
unwarrantably(adverb, inexcusably)
2
indefensibly(adverb, basis)
2
unjustifiedly
2
unlawfully(adverb, basis, illegally)
2
unreasonably
2
unwarrantedly
2
wrongly(adverb, basis)
1
baselessly
1
disproportionately
1
erroneously(adverb, basis)
1
excessively
1
gratuitously
1
groundlessly(adverb, basis)
1
idly
1
illegally(adverb, basis)
1
in an unlawful manner
1
insupportably
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APASmart Define. (2015). unjustifiably thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unjustifiably/thesaurus/synonyms
ChicagoSmart Define. 2015. "unjustifiably thesaurus" https://smartdefine.org/unjustifiably/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unjustifiably thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unjustifiably/thesaurus/synonyms>.
MLASmart Define. "unjustifiably thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unjustifiably/thesaurus/synonyms>