[ fi-del-i-tee, fahy- ]
/ fɪˈdɛl ɪ ti, faɪ- /
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noun, plural fi·del·i·ties.

strict observance of promises, duties, etc.: a servant's fidelity.
loyalty: fidelity to one's country.
conjugal faithfulness.
adherence to fact or detail.
accuracy; exactness: The speech was transcribed with great fidelity.
Audio, Video. the degree of accuracy with which sound or images are recorded or reproduced.
5 precision, faithfulness, rigor, meticulousness.



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Origin of fidelity

First recorded in 1375–1425; 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-ty2
2. See loyalty.
non·fi·del·i·ty, nounun·fi·del·i·ty, noun, plural un·fi·del·i·ties.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for fidelity

/ (fɪˈdɛlɪtɪ) /

noun plural -ties

devotion to duties, obligations, etc; faithfulness
loyalty or devotion, as to a person or cause
faithfulness to one's spouse, lover, etc
adherence to truth; accuracy in reporting detail
electronics the degree to which the output of a system, such as an amplifier or radio, accurately reproduces the characteristics of the input signalSee also high fidelity
C15: from Latin fidēlitās, from fidēlis faithful, from fidēs faith, loyalty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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