6
sightless(verb, imagined)
6
unapparent
6
unknown(adjective, obscure, dark, secret, hidden)
6
unobtrusive(verb, adjective, hidden, ignored, imagined)
6
unremarked(adjective, neglect, ignored, undiscovered, overlooked)
5
indiscernible(adjective, obscure, dark, unknown, hidden)
5
shrouded(verb, adjective, obscure, secret, unknown)
5
unmarked(adjective, neglect, covert, stealthy, unnoticed)
5
veiled(verb, adjective, secret, hidden, imperceptible)
4
unmissed
4
unseeable
4
unviewed(verb, imagined)
3
imaginary(verb, adjective, hidden, imagined)
3
impalpable(verb, adjective, hidden, imagined)
3
impenetrable(adjective, hidden, latency implication)
3
overlooked(adjective, covert, stealthy, unnoticed)
3
undescried(adjective, covert, stealthy, unnoticed)
3
unintelligible(obscure, unknown, clandestine, underground, undisclosed)
3
unregarded
3
unsuspected(verb, adjective, hidden, imagined, latency implication)
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APASmart Define. (2015). unseen thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unseen/thesaurus/synonyms
ChicagoSmart Define. 2015. "unseen thesaurus" https://smartdefine.org/unseen/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unseen thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unseen/thesaurus/synonyms>.
MLASmart Define. "unseen thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/unseen/thesaurus/synonyms>