cipher (B2)

noun

Pronunciation: /ˈsaɪfər/

Definition

A secret or disguised way of writing; a code.

Examples

• The message was written in a complex cipher that took hours to decode.

• She used a simple substitution cipher, replacing each letter with the next one in the alphabet.

• Historians are still trying to break the ancient cipher found on the scroll.

How to Use cipher

cipher for (prepositional phrase)

A code used for a specific purpose or type of message. — "They developed a new cipher for transmitting military secrets."

break a cipher (collocation)

To decode or decipher a secret message. — "The codebreakers worked tirelessly to break the enemy's cipher."

write in cipher (collocation)

To compose a message using a secret code. — "She decided to write her diary entries in cipher to keep them private."

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