Definition of fidelity in English:


Syllabification: fi·del·i·ty
Pronunciation: /fəˈdelətē


  • 1Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support: he sought only the strictest fidelity to justice
    More example sentences
    • The children may also feel that they themselves are demonstrating a lack of fidelity by supporting their remarrying parent.
    • To demonstrate fidelity to the deceased family member, a band of wind and percussion instruments is often present to perform both traditional and popular music.
    • Of the four, he is the most faithful to the values they share, but it's his very loyalty and fidelity that ultimately doom him.
    loyalty, allegiance, obedience
    historical homage, fealty
  • 1.1Sexual faithfulness to a spouse or partner.
    More example sentences
    • Young women were expected to show sexual fidelity to their dating partner, but males were not.
    • One area in which men and women differ is the importance of their partner's sexual fidelity.
    • When was this promise of obedience and sexual fidelity made?
  • 1.2The degree of exactness with which something is copied or reproduced: the 1949 recording provides reasonable fidelity
    More example sentences
    • Audio is Dolby Digital two-channel mono, with reasonable fidelity and a high degree of clarity.
    • It is a method for maximizing fidelity and dynamic range for a region of interest within a digitized medical image display.
    • It may even be possible for MP3 players to save energy by playing tunes at a slightly lower fidelity without a noticeable change in audio quality.


late Middle English: from Old French fidelite or Latin fidelitas, from fidelis 'faithful', from fides 'faith'. Compare with fealty.

More definitions of fidelity

Definition of fidelity in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
a powerful whirlpool in the sea