18
identical(adjective, like, exact, spare, equal)
15
same(adjective, like, exact, spare, equal)
14
alike(adjective, like, exact, spare, equal)
14
equivalent(adjective, like, exact, spare, equal)
13
indistinct(adjective, slight, obscure, fine, small)
11
duplicate(adjective, like, exact, spare, equal)
11
indefinite(adjective, unclear, hazy, indistinct, blurry)
11
vague(adjective, weak, slight, obscure, fine)
10
indiscernible(adjective, knowledge)
10
like(adjective, exact, equal, even, uniform)
10
obscure(adjective, vague, unclear, hazy, indistinct)
10
tantamount(adjective, like, exact, spare, equal)
9
confused(adjective, unclear, hazy, rambling, random)
9
equal(adjective, like, exact, spare, equal)
9
hazy(adjective, obscure, vague, unclear, indistinct)
9
imperceptible(adjective, hard, knowledge, faint)
9
twin(adjective, like, exact, spare, equal)
8
dim(adjective, weak, obscure, dark, vague)
8
unclear(adjective, obscure, vague, hazy, indistinct)
8
undistinguishable(adjective, indiscrimination)
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APASmart Define. (2015). indistinguishable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/indistinguishable/thesaurus/synonyms
ChicagoSmart Define. 2015. "indistinguishable thesaurus" https://smartdefine.org/indistinguishable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, indistinguishable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/indistinguishable/thesaurus/synonyms>.
MLASmart Define. "indistinguishable thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/indistinguishable/thesaurus/synonyms>