Word
fidelity
Phoneticsfi·deli·ty
US/ˌfaɪˈdɛɫəti/
UK/fɪdˈɛlɪti/
Definitions
01loyalty to a person
B2 · Upper Intermediate Uncountable noun
n. being loyal and faithful to a husband, wife, or partner.
n. faithfulness to a spouse or romantic partner, specifically regarding sexual or emotional exclusivity.
“They promised lifelong fidelity to each other during their wedding ceremony.”
“The novel explores the complexities of marital fidelity in an era where social expectations were rapidly shifting.”
Synonyms
Antonyms
02loyalty to duty
C1 · Advanced Uncountable noun Formal
n. the quality of being loyal to your duties, a country, or a set of beliefs.
n. strict adherence to one's promises, duties, or allegiances.
“The officer was awarded a medal for his long fidelity to the crown.”
“His unwavering fidelity to the principles of the revolution made him a respected, if somewhat rigid, leader.”
Synonyms
Antonyms
03accuracy of reproduction
B2 · Upper Intermediate Uncountable noun Science Technical
n. how accurately a sound or image is copied or played back.
n. the degree of exactness with which something is copied or reproduced, particularly in audio or visual technology.
“The new speakers offer incredible fidelity, making it feel like the band is in the room.”
“The digital restoration of the film achieved a level of fidelity that revealed details previously lost in the grainy original print.”
Usage
Often used in the phrase 'high fidelity' or 'hi-fi'.
Antonyms
04religious faithfulness
C2 · Proficiency Uncountable noun Religion Archaic · Formal
n. staying true to your religious beliefs or to God.
n. faithfulness to a deity or a specific religious doctrine.
“The monks lived a life of quiet fidelity to their ancient traditions.”
“The historical text emphasizes the martyr's fidelity to his faith even in the face of extreme persecution.”
Synonyms
Real-World Examples
“In late 2025, engineers there finished installing the last of a series of powerful new lasers to help astronomers peer into the cosmos with greater fidelity, taking the total number to seven.” “Probably not, as he tended to insist on fidelity to his vision, right down to the set-dressing.” - 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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
- Frequency
- Frequent
- Level
- B2 · Upper Intermediate
- Updated
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