[ krip-toh ]
/ ˈkrɪp toʊ /

noun, plural cryp·tos.

a person who secretly supports or adheres to a group, party, or belief.


secret or hidden; not publicly admitted: a crypto Nazi.

Nearby words

  1. cryptanalyze,
  2. cryptectomy,
  3. cryptesthesia,
  4. cryptic,
  5. cryptitis,
  6. crypto-,
  7. crypto-jew,
  8. cryptoanalysis,
  9. cryptobiont,
  10. cryptobiosis

Origin of crypto

1945–50; probably independent use of crypto-; cf. -o


a combining form meaning “hidden,” “secret,” used in the formation of compound words: cryptograph.
Also especially before a vowel, crypt-.

Origin of crypto-

combining form representing Greek kryptós hidden. See crypt Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for crypto

British Dictionary definitions for crypto


before a vowel crypt-

combining form

secret, hidden, or concealedcryptography; crypto-fascist

Word Origin for crypto-

New Latin, from Greek kruptos hidden, from kruptein to hide

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for crypto


before vowels crypt-, word-forming element meaning "secret" or "hidden," used in forming English words since at least 1760, from Latinized form of Greek kryptos "hidden, concealed, secret" (see crypt; the Greek comb. form was krypho-). Crypto-fascist is attested from 1937; crypto-communist from 1946.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for crypto



Hidden; secret:cryptogenic.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.