hidden Synonyms

secret obscure concealed covert out of sight unanalyzed underground underlying unfrequented unknown unredeemed cover-up stash unseen untold veiled unknowable unnoticed under-the-table unacknowledged Ido back channel unsaid withheld ulterior stealth sneaking skulking shrouded sheltered shadowless shaded sequestered stealthy subconscious subterranean telestic tacit surreptitious suppressed supersensible subterrestrial subterrene subterraneous secretive hide out tucked away unnoted unmapped unexpressed