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Definition of fidelity

fidelity

/fɪˈdɛl.ə.ti/
fi · del · i · ty
Adverb:faithfully
•
Plural:fidelities
•
Adjective:faithful
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fidelity Lexical Profile

fidelity Game Scores & Validity

• noun

1

Faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.

Example

"Throughout his long diplomatic career, he demonstrated unwavering fidelity to the principles of international law."

2

Sexual exclusiveness and faithfulness to a spouse or romantic partner.

Example

"Mutual trust and marital fidelity formed the foundation of their fifty-year marriage."

3

The degree of exactness with which something is copied, reproduced, or translated, especially in sound or image recording.

Example

"Modern studio headphones allow musicians to monitor audio recordings with remarkable fidelity."

Synonyms
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Antonyms
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• Rhymes for fidelity

• Nearby Words

fiddlesticks
fiddling
fiddly
fidelity
fidget
fidgeter
fidgetiness

Word Origin & Etymology

Borrowed in the 15th century from Middle French fidélité or directly from Latin fidēlitās ('faithfulness'), derived from fidēlis ('faithful') and fīdēs ('faith, trust').

Cite this Entry

Wordmom. (2026). Definition of Fidelity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fidelity
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