13 entries under invisible topic. ×

16
imperceptible(adjective, hard, knowledge, faint, subtle)
11
invisible(adjective, knowledge, obscure, dark, subtle)
9
faint(adjective, unclear, subtle, hazy, imperceptible)
8
hidden(adjective, secret, unseen)
7
undetectable(adjective, subtle, indistinguishable, imperceptible, unremarkable)
6
unobservable(adjective, knowledge, imperceptible)
5
camouflaged
5
concealed
5
latent(adjective, obscure, dark, secret, unknown)
4
inaudible(adjective, unclear, subtle, hazy, imperceptible)
4
unapparent
3
obscured
2
covert
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APASmart Define. (2015). indiscernible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/indiscernible/thesaurus/synonyms
ChicagoSmart Define. 2015. "indiscernible thesaurus" https://smartdefine.org/indiscernible/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, indiscernible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/indiscernible/thesaurus/synonyms>.
MLASmart Define. "indiscernible thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/indiscernible/thesaurus/synonyms>