FIDELITY Synonyms: 40 Similar and Opposite Words

Q: How is the word 'fidelity' distinct from other similar nouns?

Some common synonyms of fidelity are allegiance , devotion , fealty , loyalty , and piety . While all these words mean "faithfulness to something to which one is bound by pledge or duty," fidelity implies strict and continuing faithfulness to an obligation, trust, or duty. // marital fidelity

Q: Where would 'allegiance' be a reasonable alternative to 'fidelity'?

The words allegiance and fidelity are synonyms, but do differ in nuance. Specifically, allegiance suggests an adherence like that of citizens to their country. // pledging allegiance

Q: When would 'devotion' be a good substitute for 'fidelity'?

While the synonyms devotion and fidelity are close in meaning, devotion stresses zeal and service amounting to self-dedication. // a painter's devotion to her art

Q: When can 'fealty' be used instead of 'fidelity'?

The meanings of fealty and fidelity largely overlap; however, fealty implies a fidelity acknowledged by the individual and as compelling as a sworn vow. // fealty to the truth

Q: When might 'loyalty' be a better fit than 'fidelity'?

The words loyalty and fidelity can be used in similar contexts, but loyalty implies a faithfulness that is steadfast in the face of any temptation to renounce, desert, or betray. // valued the loyalty of his friends

Q: When could 'piety' be used to replace 'fidelity'?

The synonyms piety and fidelity are sometimes interchangeable, but piety stresses fidelity to obligations regarded as natural and fundamental. // filial piety

fidelity

noun

fə-ˈde-lə-tē

Definition of fidelity

as in loyalty

adherence to something to which one is bound by a pledge or duty they have never wavered in their fidelity to the cause of freedom

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How is the word fidelity distinct from other similar nouns?

Some common synonyms of fidelity are allegiance, devotion, fealty, loyalty, and piety. While all these words mean "faithfulness to something to which one is bound by pledge or duty," fidelity implies strict and continuing faithfulness to an obligation, trust, or duty.

marital fidelity

Where would allegiance be a reasonable alternative to fidelity?

The words allegiance and fidelity are synonyms, but do differ in nuance. Specifically, allegiance suggests an adherence like that of citizens to their country.

pledging allegiance

When would devotion be a good substitute for fidelity?

While the synonyms devotion and fidelity are close in meaning, devotion stresses zeal and service amounting to self-dedication.

a painter's devotion to her art

When can fealty be used instead of fidelity?

The meanings of fealty and fidelity largely overlap; however, fealty implies a fidelity acknowledged by the individual and as compelling as a sworn vow.

fealty to the truth

When might loyalty be a better fit than fidelity?

The words loyalty and fidelity can be used in similar contexts, but loyalty implies a faithfulness that is steadfast in the face of any temptation to renounce, desert, or betray.

valued the loyalty of his friends

When could piety be used to replace fidelity?

The synonyms piety and fidelity are sometimes interchangeable, but piety stresses fidelity to obligations regarded as natural and fundamental.

filial piety

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of fidelity Malusa calls that site fidelity — jaguars will return to places that reliably provide water, prey and shelter. — Sarah Henry, AZCentral.com, 5 Sep. 2026 Those possibilities extend beyond the transmission and fidelity measurements reported in the tests. — Atharva Gosavi, Interesting Engineering, 3 Sep. 2026 For the most part, scientists have sought to upgrade these networks by increasing the distance or fidelity of their communications. — IEEE Spectrum, 2 Sep. 2026 Love the Georgia peach down, but respecting the fidelity of partnership has never been one of her strong points. — Shamira Ibrahim, Vulture, 24 Aug. 2026 See All Example Sentences for fidelity

Recent Examples of Synonyms for fidelity

Noun

Arguably, most Russian elites have not obeyed the Kremlin out of deep loyalty or ideological alignment throughout Putin’s long reign.

— MICHAEL KIMMAGE, Foreign Affairs, 14 Sep. 2026
While traditional search engine optimization (SEO) and direct-to-consumer (DTC) loyalty programs remain vital, a brilliant new digital landscape is opening up.

— Narendra Lakshmana Gowda, Forbes.com, 14 Sep. 2026

Definition of loyalty

Noun

Kramer is accused of pledging allegiance to the Islamic State of Syria and arming himself to carry out a mass casualty attack against the American people.

— Mike Darnay, CBS News, 16 Sep. 2026
Cannon’s run remains the high or low point, depending on your school allegiance.

— Dana O’Neil, CNN Money, 14 Sep. 2026

Definition of allegiance

Noun

And then Jeremy got on the Boys From Brazil thing for television, and those commitments are, like, two years.

— Bilge Ebiri, Vulture, 21 Sep. 2026
September is National Suicide Prevention Month, a time to honor the lives lost to suicide, to stand with the families and communities suicide has touched, and to renew our commitment to prevention.

— Courtney Marx, Sun Sentinel, 20 Sep. 2026

Definition of commitment

Noun

Tim Gray, one of Variety’s managing editors at the time and now executive VP of the Golden Globes, said his main recollection was of the staff’s dedication.

— Todd Spangler, Variety, 11 Sep. 2026
Officials called the dedication the first step in an ambitious process to improve the Tennessee airport near Parton’s final resting place.

— Brian Niemietz, New York Daily News, 11 Sep. 2026

Definition of dedication

Noun

Indeed, in her devotion to sparkle, Pechman declines to probe too deeply into any of the industry’s more hurtful or exploitative dimensions.

— Natalia Winkelman, Variety, 20 Sep. 2026
By 2017, Cyrus was covering her tattoos with makeup, wearing all white, and singing ballads of marital devotion.

— Amanda Petrusich, New Yorker, 19 Sep. 2026

Definition of devotion

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fiddling (with)

fidelity

fidget

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“Fidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fidelity. Accessed 21 Sep. 2026.

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Synonyms of fidelity

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