fidelity
Americannoun
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strict observance of promises, duties, etc..
a servant's fidelity.
-
fidelity to one's country.
- Antonyms:
- disloyalty
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conjugal faithfulness.
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adherence to fact or detail.
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accuracy; exactness.
The speech was transcribed with great fidelity.
- Synonyms:
- rigor, faithfulness, precision
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Audio, Video. the degree of accuracy with which sound or images are recorded or reproduced.
noun
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devotion to duties, obligations, etc; faithfulness
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loyalty or devotion, as to a person or cause
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faithfulness to one's spouse, lover, etc
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adherence to truth; accuracy in reporting detail
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electronics the degree to which the output of a system, such as an amplifier or radio, accurately reproduces the characteristics of the input signal See also high fidelity
Synonym Usage
See loyalty.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of fidelity
First recorded in 1500–10; late Middle English fidelite (from Middle French ), from Latin fidēlitās, equivalent to fidēli- (stem of fidēlis “loyal,” equivalent to fidē(s) faith + -lis adjective suffix) + -tās -ty 2
Explanation
Fidelity is the quality of being faithful or loyal. Dogs are famous for their fidelity. Fidelity comes from the Latin root fides, which means faith, so fidelity is the state of being faithful. Marital fidelity is faithfulness to your spouse. If you're a journalist, your reports should have fidelity to the facts. Someone without fidelity to a religion or group belief is called an infidel.
Vocabulary lists containing fidelity
ASVAB Word Knowledge
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"The Black Cat" by Edgar Allan Poe
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100 SAT Words Beginning with "F"
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Robert Pozen is a distinguished senior lecturer at the MIT Sloan School of Management and former president of Fidelity Investments.
From MarketWatch • Jun. 17, 2026
Fidelity customers are eligible to request SpaceX IPO shares if they have at least $2,000 in their brokerage accounts.
From MarketWatch • Jun. 11, 2026
It is being sold through a select group of brokerages, including Charles Schwab, Robinhood and Fidelity.
From Los Angeles Times • Jun. 11, 2026
Fidelity will allocate that money between New York Life and Nationwide, based on factors including pricing, said Dierdorf.
From The Wall Street Journal • Jun. 10, 2026
“There is no ‘big Me’ and Tittle you,’ ” T. M. Alexander, one of the founders of the Southeastern Fidelity Fire Insurance Company, said.
From "Black Like Me" by John Howard Griffin
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
