covert Synonyms - page 2

unapparent hush-hush hole-and-corner hideout top secret unconfessed under cover unrevealed unpublished unperceivable unobservable unexpressed undisclosed under wraps under the counter cloak-and-dagger nonvisual under-the-table sub-rosa behind-the-scenes backroom back room back channel ground cover bomb shelter belowground hideaway black-market screenland camouflaged hiding place funk hole foxhole low profile bolt-hole leaf mold air-raid shelter abeyant confidential closet close cloaked classified clandestine chaparral ceiled conniving coppice dark cucullated