34 entries under imperceptible topic. ×

2
indefinite(adjective, unclear, insubstantial, indistinct, indistinguishable)
2
obscure(adjective, unclear, hidden, indistinct, indistinguishable)
1
abstruse(abstract, insubstantial, theoretical, philosophical)
1
faint(unclear, subtle, indistinct, unremarkable)
1
ideal(fake, false, abstract, theoretical)
1
unsure(unclear, insubstantial, indistinct, indistinguishable)
1
untouchable
0
beyond reach(expression, adjective)
0
hypothetical(abstract, insubstantial, theoretical, philosophical)
0
indeterminate(unclear, insubstantial, indistinct, indistinguishable)
0
inviolable
0
invulnerable
0
sacrosanct
0
uncertain(unclear, insubstantial, indistinct, indistinguishable)
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APASmart Define. (2015). impalpable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/impalpable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impalpable thesaurus" https://smartdefine.org/impalpable/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, impalpable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/impalpable/thesaurus/synonyms>.
MLASmart Define. "impalpable thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/impalpable/thesaurus/synonyms>