fi·del·i·ty

[fi-del-i-tee, fahy-]
noun, plural fi·del·i·ties.
1.
strict observance of promises, duties, etc.: a servant's fidelity.
2.
loyalty: fidelity to one's country.
3.
conjugal faithfulness.
4.
adherence to fact or detail.
5.
accuracy; exactness: The speech was transcribed with great fidelity.
6.
Audio, Video. the degree of accuracy with which sound or images are recorded or reproduced.

Origin:
1375–1425; late Middle English fidelite (< Middle French) < Latin fidēlitās, equivalent to fidēli- (stem of fidēlis loyal, equivalent to fidē(s) faith + -lis adj. suffix) + -tās -ty2

non·fi·del·i·ty, noun
un·fi·del·i·ty, noun, plural un·fi·del·i·ties.


2. See loyalty. 5. precision, faithfulness, rigor, meticulousness.


2. disloyalty.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To fidelity
00:10
Fidelity is always a great word to know.
So is lollapalooza. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Collins
World English Dictionary
fidelity (fɪˈdɛlɪtɪ) [Click for IPA pronunciation guide]
 
n , pl -ties
1.  devotion to duties, obligations, etc; faithfulness
2.  loyalty or devotion, as to a person or cause
3.  faithfulness to one's spouse, lover, etc
4.  adherence to truth; accuracy in reporting detail
5.  electronics See also high fidelity the degree to which the output of a system, such as an amplifier or radio, accurately reproduces the characteristics of the input signal
 
[C15: from Latin fidēlitās, from fidēlis faithful, from fidēs faith, loyalty]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

fidelity
1494, from M.Fr. fidélité, from L. fidelitatem (nom. fidelitas) "faithfulness, adherence," from fidelis "faithful," from fides "faith" (see faith).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
So it's a more high-fidelity environment, with less flexibility for the user.
The breathtaking realism of the landscape owed its fidelity to photography.
Fidelity generally supports the inclusion of a mandatory stress test in the
  rule.
Fidelity to cherished beliefs has been replaced by loyalty to anything that
  brings material benefit.
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