Unobservable Thesaurus / Synonyms

29 entries under imperceptible topic. ×

10	invisible(adjective, knowledge, hidden, unable)
7	impalpable(adjective, knowledge, unsubstantial, intangible)
7	inappreciable(adjective, knowledge)
7	indiscernible(adjective, knowledge, invisible)
7	intangible(adjective, knowledge, indefinite, obscured)
6	insensible(adjective, knowledge)
5	imponderable(adjective, knowledge)
4	unnoticeable(adjective, knowledge)
3	inconspicuous
3	indistinguishable(adjective, knowledge)
2	evanescent
2	indistinct
2	insignificant
2	slight
2	subtle
2	trivial
2	vague
1	ephemeral
1	fine
1	gradual

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APA	Smart Define. (2015). unobservable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unobservable/thesaurus/synonyms
Chicago	Smart Define. 2015. "unobservable thesaurus" https://smartdefine.org/unobservable/thesaurus/synonyms (accessed September 29, 2026).
Harvard	Smart Define 2015, unobservable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unobservable/thesaurus/synonyms>.
MLA	Smart Define. "unobservable thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unobservable/thesaurus/synonyms>

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