overt Antonyms

covert subterraneous arty back room backroom behind-the-scenes sub-rosa under-the-table belowground lens cap veiled unseen subterrestrial surreptitious surrey tented ulterior umbilical underground underhanded underlying cagey camouflaged against the law unrevealed unsolved untellable unthought-of untracked as clear as mud cloak-and-sword hidden from sight unreported unimagined undisclosed cloak-and-dagger conspiratorial hole-and-corner hush-hush pinto undercover top secret unavowed as close as the grave subterranean backdoor confidential conniving covered delitescent