2
in mind
2
mysterious
1
arcane
1
baffling
1
buried
1
cloistered
1
disguised
1
faint
1
formless
1
inappreciable
1
indistinguishable
1
infrared
1
insensible
1
intangible
1
latent
1
lightless
1
nameless
1
nonvisual
1
notional
1
obscured(verb, adjective)
10 years ago|2.6k views|share |citing 
APASmart Define. (2016). visible thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/visible/thesaurus/antonyms
ChicagoSmart Define. 2016. "visible thesaurus" https://smartdefine.org/visible/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, visible thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/visible/thesaurus/antonyms>.
MLASmart Define. "visible thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/visible/thesaurus/antonyms>