Mystified or of an obscure nature.
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.
Having hidden (unapparent) meaning.
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.
Mysterious; strange.
Of or relating to runes, runic inscription, or runic language; runic.