Etymology of crypt

The word crypt (vault, cavern) comes from the Latin crypta (vault, cavern), from the Greek crypte, fem. of cryptos [hidden; Gr: κρυπτός], verbal adj. from cryptein [to hide, to conceal; Gr: κρύπτειν]. See also "etymology of grotesque" here.
.
From the same root:
cryptic, crypto-, cryptogam, cryptogram, cryptographer.
.

In modern Greek :
a) crypte: crypt [Gr.: κρύπτη]
b) crypto (or cryvo): to hide, conceal, secrete [Gr.: κρύπτω or κρύβω].
c) cryptographos: cryptographer [Gr.: κρυπτογράφος]
d) cryptographima: cryptogram, coded message [Gr.: κρυπτογράφημα]
.
OED.
______________________  Post 214. ________________

Etymology of grotesque

The adj. grotesque comes from the French crotesque from the Italian grottesco, (lit. "of a cave,"), from grotta, from the Latin crypta (vault, cavern), which is a transliteration of the Greek crypte [crypt, hidden place; Gr: κρύπτη]. Initially the phrase "figura grottesca" (or "pitture grottesche") was referring to the paintings of the caves.
.
In modern Greek:
a) grotesco: grotesque [Gr.: γκροτέσκο; loanword]
b) crypte: crypt [Gr.: κρύπτη]
c) crypto (or cryvo): to hide, conceal, secrete [Gr.: κρύβω]

OED.
______________________  Post 213. _________________