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cipher

23 synonyms and 5 antonyms for cipher, grouped by meaning and by how common each one is.

Noun — A system for turning readable text into a secret, scrambled form; more loosely, a secret code.

Synonyms

Everyday swaps

Common words most readers know — safe in any writing.

Less common

Still standard English, but they carry more weight.

Rare, literary or technical

Precise, but they will stand out — check the sense before using one.

Synonyms by Meaning

1. noun

A system for turning readable text into a secret, scrambled form; more loosely, a secret code.

“The spy sent messages written in a simple cipher.”

2. noun

A person or thing regarded as having no real importance or influence.

“Without real authority, the new manager was just a cipher.”

Opposites

3. verb

To convert a message into a secret code.

“The clerk ciphered the report before sending it.”

Opposites

How to use cipher

The word patterns that sound natural to a native speaker.

crack a cipher a simple cipher encode in cipher

Etymology

From Old French cyfre, ultimately from Arabic sifr meaning "zero" or "empty" — the same root that gives us the word "zero" itself.

Full origin of cipher →

Frequently asked questions

What does “cipher” mean?
The word “cipher” means a system for turning readable text into a secret, scrambled form; more loosely, a secret code. In plain terms, a secret code for hiding a message, or someone/something with no real substance.
How do you pronounce “cipher”?
“Cipher” is pronounced SEYE-fuh (/ˈsaɪfɚ/ in IPA).
How do you use “cipher” in a sentence?
Here is “cipher” used in a sentence: “The spy sent messages written in a simple cipher.”
What part of speech is “cipher”?
Depending on how it is used, “cipher” can be a noun and a verb.
Where does the word “cipher” come from?
The word “cipher” comes from Old French. From Old French cyfre, ultimately from Arabic sifr meaning "zero" or "empty" — the same root that gives us the word "zero" itself.
Is “cipher” a common word?
“Cipher” is an uncommon word in modern English.
How many meanings does “cipher” have?
“Cipher” has 3 distinct senses listed in this dictionary. The most common is: a system for turning readable text into a secret, scrambled form; more loosely, a secret code.

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Synonyms and antonyms from Wiktionary, CC BY-SA.