4
neutral(adjective, dull, flat, pale, bland)
4
unnoticeable(adjective, knowledge, imperceptible)
3
aimless
3
ambiguous(adjective, unclear, hazy, indistinct, indeterminate)
3
comparable(adjective, like, exact, equal, even)
3
corresponding(adjective, like, exact, spare, equal)
3
homogeneous(adjective, like, uniform, identical, interchangeable)
3
homologous(adjective, like, equal, balanced, identical)
3
impalpable(adjective, knowledge, unclear, subtle, indistinct)
3
inappreciable(adjective, knowledge, imperceptible)
3
incoherent(adjective, unintelligible)
3
inconspicuous
3
inseparable
3
intangible(adjective, knowledge, hazy, indistinct, imperceptible)
3
invisible(adjective, knowledge)
3
murky
3
one
3
undistinguished(adjective, indiscrimination)
3
unobservable(adjective, knowledge, imperceptible)
3
unplanned
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APASmart Define. (2015). indistinguishable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/indistinguishable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indistinguishable thesaurus" https://smartdefine.org/indistinguishable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, indistinguishable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/indistinguishable/thesaurus/synonyms>.
MLASmart Define. "indistinguishable thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/indistinguishable/thesaurus/synonyms>