0
imperceptible
0
indiscernible
0
mysterious
0
occult
0
stealthy
0
undercover
0
unnoticeable
0
blurry
0
cagey
0
camouflaged
0
clandestine
0
cloaked
0
cloistered
0
closet
0
clouded
0
cloudy
0
crafty
0
cunning
0
decide
0
deep
10 years ago|2k views|share |citing 
APASmart Define. (2016). patent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/patent/thesaurus/antonyms
ChicagoSmart Define. 2016. "patent thesaurus" https://smartdefine.org/patent/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, patent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/patent/thesaurus/antonyms>.
MLASmart Define. "patent thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/patent/thesaurus/antonyms>