cipher
word
Definition
A cipher is a system or method for writing in secret code, often used to hide information. It can also mean a person or thing of no value or importance.
Usage & Nuances
Formal and technical when used to mean 'code.' Common in cryptography, literature, or history. Less commonly, 'cipher' refers to a person of no importance (slightly old-fashioned). Don't confuse with 'cypher' (a less common spelling) or 'zero' (which also historically means 'cipher'). Often used in the phrase 'decipher a cipher' (to decode).
Example Sentences
The message was written in a secret cipher.
basic
He used a cipher to protect his diary.
basic
You have to decipher the cipher to read the message.
basic
The spies communicated with each other using a complex cipher.
natural
After hours of work, she finally cracked the cipher.
natural
In the meeting, he felt like a cipher—no one noticed him at all.
natural