Synonyms|52Antonyms|7|Broader|0Narrower|0Related|118
2
insignificant(adjective, imperceptible)
2
slight(adjective, imperceptible)
2
subtle(adjective, imperceptible)
2
trivial(adjective, imperceptible)
2
vague(adjective, imperceptible)
1
clandestine(adjective, latent)
1
ephemeral(adjective, imperceptible)
1
faint
1
fine(adjective, imperceptible)
1
gradual(adjective, imperceptible)
1
inaudible(adjective, imperceptible)
1
infinitesimal(adjective, imperceptible)
1
minute(adjective, imperceptible)
1
obscure
1
obscured(adjective, invisible)
1
shadowy(adjective, imperceptible)
1
small(adjective, imperceptible)
1
undetectable(adjective, imperceptible)
1
unexposed(adjective, latent)
1
unperceivable
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APASmart Define. (2015). unobservable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unobservable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unobservable thesaurus" https://smartdefine.org/unobservable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unobservable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unobservable/thesaurus/synonyms>.
MLASmart Define. "unobservable thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unobservable/thesaurus/synonyms>