1
under the radar
1
underhanded
1
unrevealed
1
unseen
1
veiled
0
adjourn
0
alloy
0
arcane
0
arch
0
arty
0
barricade
0
black and white
0
black hole
0
black out
0
blockade
0
blotchy
0
bolt
0
buried
0
cagey
0
changing
11 years ago|2.7k views|share |citing 
APASmart Define. (2015). overt thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/overt/thesaurus/antonyms
ChicagoSmart Define. 2015. "overt thesaurus" https://smartdefine.org/overt/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, overt thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/overt/thesaurus/antonyms>.
MLASmart Define. "overt thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/overt/thesaurus/antonyms>