Word
decipher
Phoneticsde·ci·pher, stress on the second syllable
US/dɪˈsaɪfɝ/
UK/dɪsˈaɪfɐ/
Definitions
01to decode
B2 · Upper Intermediate Computing Technical
v. to change a secret message or code into plain language so you can understand it.
v. to convert a text written in code or cipher into plain language.
“The experts worked for weeks to decipher the enemy's secret radio signals.”
“During the war, mathematicians at Bletchley Park worked tirelessly to decipher messages encrypted by the Enigma machine.”
02to read messy writing
B2 · Upper Intermediate
v. to succeed in reading something that is very messy or hard to see.
v. to interpret or read text that is nearly illegible, obscure, or poorly written.
“I spent ten minutes trying to decipher my doctor's messy handwriting on the note.”
“The historian spent years in the archives attempting to decipher the faded ink on the medieval parchment.”
03to understand a situation
C1 · Advanced Academic
v. to figure out the meaning of something complicated or confusing.
v. to discern the meaning of a complex, ambiguous, or confusing situation or set of data.
“It was hard to decipher his true feelings because he rarely showed any emotion.”
“Economists are still struggling to decipher the long-term implications of the sudden market shift.”
Synonyms
Antonyms
04the act of decoding
C2 · Proficiency Uncountable noun Formal · Technical
n. the act of solving a code or understanding a difficult text.
n. the process or result of decoding or interpreting obscure information.
“The decipher of the ancient tablet changed how we view that civilization.”
“The successful decipher of the manuscript provided unprecedented insights into the linguistic evolution of the region.”
Synonyms
Usage
The verb is transitive and requires a direct object, such as a code, a message, or handwriting.
Pitfall
decipher about the code
decipher the code
Decipher is a transitive verb and does not take the preposition 'about'.
Real-World Examples
“And navigating a website might involve deciphering images or knowing what links to click.” “It is difficult to decipher if Cruzeiro’s Jonathan Jesus would sign for Strasbourg or Chelsea, but the talk in Brazil is that ownership group BlueCo want the 22-year-old centre-back.” “Want to decipher the different political biases in the Spanish press?” Etymology
As decypher, but not retaining the y from the Old French etyma of cipher (cyfre, cyffre); the i spelling tends to be preferred etymologically, being consistent with its cognates, the French déchiffrer and the Italian decifrare, and with their common ancestor, the Medieval Latin cifra, cifera, ciphra. By surface analysis, de- + cipher.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Occasional
- Level
- C1 · Advanced
- Updated
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englishreference.com/q/decipher