What does encrypted mean?
"Encrypted" describes information that has been deliberately transformed into an unreadable, coded form so that only someone possessing the correct key can restore it to plain text. A password database may be encrypted at rest, a video call may travel over an encrypted channel, and messaging apps now advertise end-to-end encryption as a privacy guarantee. The word carries strongly positive connotations of security, confidentiality, and protection against eavesdropping, and it has moved from specialist cryptographic jargon into everyday vocabulary as digital privacy has become a mainstream concern. Grammatically, it works both as an adjective — "an encrypted file" — and as the past tense of the verb "encrypt": "she encrypted the archive before emailing it." Its opposite is "decrypted," meaning returned to readable form. Because data breaches are a constant modern risk, knowing whether your information is encrypted is often the difference between a harmless leak and a serious one, making this a small word with outsized practical importance.
Converted into a coded form so that it cannot be read without a key or password.
"The app keeps every conversation fully encrypted."
Most often found before nouns like data, files, messages, and connection.
Past tense and past participle of encrypt: converted (information) into cipher form.
"She encrypted the documents before uploading them."
Standard as the inflected form of 'encrypt'.
Every WhatsApp message you send travels as gibberish to everyone except its recipient — because it's encrypted end to end.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of encrypted
The verb "encrypt" was formed in the mid-20th century from the prefix en- plus the Greek-derived root "crypt", from Greek kryptos, meaning hidden. That root also gives us "cryptography" (secret writing), "cryptic" (mysterious), and "crypt" (an underground chamber), all sharing the idea of concealment. The adjective "encrypted" arose naturally as the past participle of the verb once digital computing made data protection routine.
Related word forms
How encrypted is actually used
Primarily a technical term used in computing, security, and telecommunications contexts; increasingly familiar to general audiences thanks to consumer messaging apps. It functions chiefly as a participial adjective but also serves as the past tense and past participle of the verb 'encrypt'.
Easily confused with encrypted
Decrypted means converted back into readable form from code, while encrypted means converted into code in the first place.