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Synonyms

encrypt

American  
[en-kript] / ɛnˈkrɪpt /

verb (used with object)

  • encrypts,
    present (3rd person singular)
  • encrypted,
    past participle,  past
  • encrypting
    present participle
  1. to convert (a message or the like) into cipher or code.

    The letter was encrypted before being mailed to protect it from any prying eyes.

  2. Computers. to change (digital data) into a form that cannot be read without converting it back using a unique key.

    The protocol encrypts all of your personal information, including credit card number, name, and address, so that it cannot be stolen.


encrypt British  
/ ɪnˈkrɪpt /

verb

  1. to put (a message) into code

  2. to put (computer data) into a coded form

  3. to distort (a television or other signal) so that it cannot be understood without the appropriate decryption equipment

"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

encrypt Scientific  
/ ĕn-krĭpt /
  1. To alter information using a code or mathematical algorithm so as to be unintelligible to unauthorized readers.


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Etymology

Origin of encrypt

First recorded in 1940–45; en- 1 + -crypt (abstracted from cryptic ( def. ), cryptography ( def. ), etc.), modeled on encode ( def. )


Explanation

To encrypt is to convert regular language into a code. Encrypting is a way of keeping secrets. Encrypting is a way of disguising a written message so that most people won't understand it. Encrypting puts a message into a code that will appear to be gibberish. Only someone who knows the code or is an expert in breaking codes — like a cryptographer — will be able to read something encrypted. People don't encrypt their laundry lists or term papers; communications that get encrypted are top secret info, like government reports and messages from spies.

Keep Reading on Vocabulary.com

Vocabulary lists containing encrypt

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

VPNs mask your IP address and encrypt your traffic, but websites still can collect data on you through cookies, browser fingerprinting and account logins.

From Salon ● Nov. 30, 2025

The technology, which promises to power certain computations that are virtually impossible for today’s computers, could transform everything, including the way companies make medicine, invest money, deliver internet and encrypt information.

From The Wall Street Journal ● Sep. 10, 2025

“When the allegations about the NSA vacuuming up all of our information emerged in 2013, we began to encrypt everything online including our websites, chat applications, and phone apps,” Wisniewski told me.

From Slate ● Feb. 16, 2024

It follows criticism from government and police after Meta started to encrypt Messenger chats by default.

From BBC ● Jan. 26, 2024

The more steps a cipher had, the more time it took to encrypt.

From "The Woman All Spies Fear" by Amy Butler Greenfield

Meta says later this year it will offer a confidential virtual machine that encrypts data so the company can’t access the chats.

From The Wall Street Journal ● Sep. 29, 2026

It also plans to roll out an upgraded security model that encrypts user conversations and data.

From MarketWatch ● Sep. 28, 2026

Later this year, Meta plans to roll out Muse Confidential VM, an upgraded security model that encrypts all user conversations and data behind a private key inaccessible even to Meta itself.

From MarketWatch ● Sep. 26, 2026

Bank A generates and encrypts a Swift payment message containing transfer instructions.

From The Wall Street Journal ● Jun. 26, 2026

As you type, Enigma encrypts your message—and the number of ways it can do this is mind-boggling.

From "The Woman All Spies Fear" by Amy Butler Greenfield

The worst damage was in the facilities division, where about half the servers were encrypted — meaning that district staff could not access their own systems and records.

From Los Angeles Times ● Oct. 17, 2026

A Saudi national who worked as an engineer at OpenAI has been arrested and charged with hiding an encrypted recording device at a company office in San Francisco.

From The Wall Street Journal ● Oct. 13, 2026

Meta will soon give Muse an encrypted mode that will keep the company from being able to see what the user is doing with the agent.

From The Wall Street Journal ● Oct. 4, 2026

And he adds that all recordings captured by the glasses are encrypted, and the firm itself cannot see them - though this also means HTC cannot flag harmful content.

From BBC ● Sep. 24, 2026

Mother was so convinced, he’d sent an encrypted message about it to Tru at MI6 headquarters.

From "City Spies" by James Ponti

A chatbot account connected to Alfozan's spouse also allegedly contained queries related to remote audio recording and encrypting memory cards.

From Barron's ● Oct. 13, 2026

One common security method involves encrypting data with a massive number known as a public key.

From The Wall Street Journal ● Aug. 25, 2026

VPNs help by masking IPs and encrypting traffic, making monitoring harder.

From Salon ● Jun. 10, 2026

Quantum computing has the potential to relatively easily break the global and currently used advanced encryption standard, or AES, which involves the same key being used for both encrypting and decrypting data.

From MarketWatch ● Oct. 25, 2025

Still, even encrypting a large dictionary 25 times using different salts took up too much hard-drive space for a basic home computer.

From Underground by Suelette Dreyfus

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