Quiz: Remember the definition of mal de mer?
1630s, "hidden, occult, mystical," from Late Latin crypticus, from Greek kryptikos "fit for concealing," from kryptos "hidden" (see crypt). Meaning "mysterious, enigmatic" is recorded from 1920. Related: Cryptically.
cryptic cryp·tic (krĭp'tĭk)
Hidden or concealed.
Tending to conceal or camouflage, as the coloring of an animal.