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 next

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

Synonyms & Similar Words

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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 The Data Problem Behind The Funding Problem Most transportation professionals understand the cost curve; the hurdle is a lack of high-fidelity data to act on it. —

Mark Pittman, Forbes.com, 25 June 2026 The partnership with Qobuz, meanwhile, aligns Bey with a streaming platform that touts its high audio fidelity and industry-leading pay-per-stream for artists. —

Jazz Monroe, Pitchfork, 22 June 2026 In the case of Oz, a team of producers and AI specialists produced an entirely new version of the 1939 classic, tailoring it to the unique dimensions and fidelity of Sphere. —

Dade Hayes, Deadline, 16 June 2026 Like all forms of fidelity, adherence to one’s medium involves the surrender of other possibilities. —

Rachel Cusk, New Yorker, 13 June 2026 See All Example Sentences for fidelity

Recent Examples of Synonyms for fidelity

Noun

When the Gold Cloaks march into the palace and proclaim their new loyalties, Rickard’s men defy him by laying down their swords, too.

— Amanda Whiting, Vulture, 29 June 2026
This column first addressed an employee’s duty of loyalty nine years ago, almost to the day.

— Dan Eaton, San Diego Union-Tribune, 29 June 2026

Definition of loyalty

Noun

The titular Texas town hangs in the balance as ranching dynasties unravel, hearts switch allegiances and the overall future of small town culture built on ranching and agriculture comes under scrutiny.

— Dessi Gomez, Deadline, 25 June 2026
Scores of protesters appeared in front of the Supreme Court in late April to support people who say they were harmed by the weed killer and other chemicals, in allegiance with the Make America Healthy Again movement.

— Carrie Johnson, NPR, 25 June 2026

Definition of allegiance

Noun

Some attendees spent months creating their costumes, sewing patterns and 3D-printing props just to attend the convention, and that dedication was shared by many at Charlotte Big Anime.

— Zaire Breedlove, Charlotte Observer, 28 June 2026
Even by these standards, some Costco fans’ dedication is next level.

— Jessica Guynn, USA Today, 27 June 2026

Definition of dedication

Noun

Courtesy of Judice & Araujo That encounter helped awaken his lifelong devotion to plants.

— Spencer Elliott, Forbes.com, 23 June 2026
This devotion to excellence has paved the way for EltaMD’s recognition by the likes of Hailey Bieber, Sydney Sweeney, Kendall Jenner, Drew Barrymore, and Gwyneth Paltrow.

— Stacia Datskovska, Footwear News, 23 June 2026