Having hidden (unapparent) meaning.
Involving use of a code or cipher.
Apparently identical, but actually genetically distinct.
Serving as camouflage.
Living in a cavity or small cave.
Well camouflaged; having good camouflage.
Mystified or of an obscure nature.
Of a crossword puzzle, or a clue in such a puzzle, using, in addition to definitions, wordplay such as anagrams, homophones and hidden words to indicate solutions.
A cryptic crossword puzzle.
Hidden, out of sight or inconspicuous.
Dark, faint or indistinct.
Difficult to understand.
Not well-known.
Unknown or uncertain; unclear.
To hide, put out of sight etc.
To render obscure; to darken; to make dim; to keep in the dark; to hide; to make less visible, intelligible, legible, glorious, beautiful, or illustrious.