SINCERE Synonyms: 126 Similar and Opposite Words

Q: How is the word 'sincere' distinct from other similar adjectives?

Some common synonyms of sincere are heartfelt , hearty , unfeigned , and wholehearted . While all these words mean "genuine in feeling," sincere stresses absence of hypocrisy, feigning, or any falsifying embellishment or exaggeration. // a sincere apology

Q: When can 'heartfelt' be used instead of 'sincere'?

While in some cases nearly identical to sincere , heartfelt suggests depth of genuine feeling outwardly expressed. // expresses our heartfelt gratitude

Q: When could 'hearty' be used to replace 'sincere'?

Although the words hearty and sincere have much in common, hearty suggests honesty, warmth, and exuberance in displaying feeling. // received a hearty welcome

Q: Where would 'unfeigned' be a reasonable alternative to 'sincere'?

In some situations, the words unfeigned and sincere are roughly equivalent. However, unfeigned stresses spontaneity and absence of pretense. // her unfeigned delight at receiving the award

Q: When might 'wholehearted' be a better fit than 'sincere'?

The synonyms wholehearted and sincere are sometimes interchangeable, but wholehearted suggests sincerity and earnest devotion without reservation or misgiving. // promised our wholehearted support

sincere

adjective

sin-ˈsir

Definition of sincere

as in genuine

genuine in feeling she offered a sincere apology for her angry outburst

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in honest

free from any intent to deceive or impress others done out of a sincere desire to help others

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How is the word sincere distinct from other similar adjectives?

Some common synonyms of sincere are heartfelt, hearty, unfeigned, and wholehearted. While all these words mean "genuine in feeling," sincere stresses absence of hypocrisy, feigning, or any falsifying embellishment or exaggeration.

a sincere apology

When can heartfelt be used instead of sincere?

While in some cases nearly identical to sincere, heartfelt suggests depth of genuine feeling outwardly expressed.

expresses our heartfelt gratitude

When could hearty be used to replace sincere?

Although the words hearty and sincere have much in common, hearty suggests honesty, warmth, and exuberance in displaying feeling.

received a hearty welcome

Where would unfeigned be a reasonable alternative to sincere?

In some situations, the words unfeigned and sincere are roughly equivalent. However, unfeigned stresses spontaneity and absence of pretense.

her unfeigned delight at receiving the award

When might wholehearted be a better fit than sincere?

The synonyms wholehearted and sincere are sometimes interchangeable, but wholehearted suggests sincerity and earnest devotion without reservation or misgiving.

promised our wholehearted support

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 sincere At the very least, interns should send a short, sincere thank you message to their team via Slack or email, Roffe says. — Sophie Caldwell, CNBC, 20 Aug. 2026 Thank you to everyone who is supporting my family and expressing their sincere condolences. — Emlyn Travis, Entertainment Weekly, 18 Aug. 2026 Your writing and dialogue tend to be sophisticated and sly—unselfconsciously funny—while at the same time sincere and heartfelt. — Lisa Hanawalt, The New York Review of Books, 15 Aug. 2026 For Gorbachev, this reflected both a sincere belief and an economic imperative. — Tom Nichols, The Atlantic, 14 Aug. 2026 See All Example Sentences for sincere

Recent Examples of Synonyms for sincere

Adjective

With what seems like little embellishment to real locations (including a genuine culture of female-only caddies sporting bright colors), the movie captures a languid, top-down strangeness.

— Robert Abele, Los Angeles Times, 4 Sep. 2026
The aesthetic lineage Wingard invokes relied on the genuine nastiness of works like Faster, Pussycat!

— Angelica Jade Bastién, Vulture, 4 Sep. 2026

Definition of genuine

Adjective

Rogers’ heartfelt dedication touched on each of those points, remembering Parton for her charitable spirit and immense talent.

— Chris Parton, USA Today, 30 Aug. 2026
Beyonce, Mick Jagger, Taylor Swift and Miley Cyrus were among the many in the music world who lit up the internet with heartfelt comments.

— Donna Vickroy, Chicago Tribune, 28 Aug. 2026

Definition of heartfelt

Adjective

The same statement also said that construction and installation at facilities unaffected by the fire would continue as normal and that air quality was being continuously monitored.

— ABC News, ABC News, 27 Aug. 2026
The rest of the facility was unaffected with no other injuries reported, according to hospital officials and witnesses.

— Munir Ahmed, Los Angeles Times, 26 Aug. 2026

Definition of unaffected

Adjective

This was a performer whose sense of self-worth, depending on the day, ranged from unfeigned humility to desperate insecurity to full-on self-loathing.

— Bruce Handy, Air Mail, 3 May 2025
His life story is inspiring, and his love of country is as unfeigned as his faith.

— Daniel Foster, National Review, 30 Nov. 2023

Definition of unfeigned

Adjective

It’s still built with comfort in mind, thanks to the flowy material and stretchy elastic waistbands of the pants and top, but has a simple cut that can be dressed up or down easily.

— Amelia McBride, Travel + Leisure, 2 Sep. 2026
This converts touch from a simple collision-detection mechanism into an active source of information for aerial navigation, positioning, and grasp control.

— Jijo Malayil, Interesting Engineering, 1 Sep. 2026

Definition of simple

Adjective

The true main event will pit top AEW star Mercedes Mone against Willow Nightingale in yet another women’s world title match that will not go on last.

— Alfred Konuwa, Forbes.com, 30 Aug. 2026
Unlocking the true nature of dark energy and dark matter could help astronomers understand what the universe is made of, how its expansion has changed over time, and if there is more to understanding gravity than meets the eye.

— Ashley Strickland, CNN Money, 30 Aug. 2026

Definition of true

Adjective

When model Tricia Helfer came in for a touch-up before an introductory visit to her boyfriend’s parents, Johns toned down her bright blonde chunks to play up her naturally innocent looks.

— Vanessa Friedman, Vogue, 1 Sep. 2026
In a cruel coup de grace, Acosta reached into Shuler’s bag to steal an item while the innocent customer was still alive, prosecutors said.

— John Annese, New York Daily News, 31 Aug. 2026

Definition of innocent

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“Sincere.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sincere. Accessed 5 Sep. 2026.

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Synonyms of sincere

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