Definition

A method of transforming a message to keep its meaning secret, often using a code or a system of symbols.

Example

The spy used a cypher to send secret messages to his team.

Conversation

I just started reading this mystery novel, and it has a cool cypher in it.

That sounds intriguing! How does it work?

The main character has to decode the cypher to find a hidden treasure.

Wow, I love stories like that! I can't wait to hear what happens.

Synonyms & Antonyms

Root Explanation

Cypher → It originates from the Arabic word 'sifr' (meaning zero or empty), which was later adopted into Latin as 'cifra' (meaning a figure or numeral). The word 'cypher' refers to a method of transforming a message into a code or a system of writing that uses symbols or figures.

Memory Tip

Think of the Arabic word for zero, 'sifr', which helps you remember that a cypher is a way of encoding messages, often using symbols or figures.

Visually Confused Words