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Showing results for sincere. Search instead for Sincerest.
Synonyms

sincere

American  
[sin-seer] / sɪnˈsɪər /

adjective

sincerer, sincerest
  1. free of deceit, hypocrisy, or falseness; earnest.

    a sincere apology.

    Synonyms:
    unaffected, guileless, open, honest, candid, frank
    Antonyms:
    false
  2. genuine; real.

    a sincere effort to improve; a sincere friend.

    Antonyms:
    false
  3. pure; unmixed; unadulterated.

  4. Obsolete. sound; unimpaired.


sincere British  
/ sɪnˈsɪə /

adjective

  1. not hypocritical or deceitful; open; genuine

    a sincere person

    sincere regret

  2. archaic pure; unadulterated; unmixed

  3. obsolete sound; whole

"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

Synonym Usage

See earnest 1.

Other Word Forms


Etymology

Origin of sincere

First recorded in 1525–35; from Latin sincērus “pure, clean, untainted”


Explanation

Being sincere is being genuine. If someone compliments you on your outfit, but you notice them rolling their eyes when they think you’re not looking, they probably weren't being sincere. If you've been offered a sincere thanks for something you've done, the person is probably really grateful. Sometimes when people say "thank you," they don't always mean it, but when they add the adjective sincere, the emphasis is usually for a very good reason. You may hear a charity sending out a sincere thanks to sponsors for their donations, which help keep the charity running.

Keep Reading on Vocabulary.com

Vocabulary lists containing sincere

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

King Charles III is to speak with "unflinching honesty" and "sincere sorrow" on the lasting pain of the transatlantic slave trade, during the final leg of his Caribbean tour in Antigua, Buckingham Palace has said.

From BBC ● Oct. 31, 2026

"You may therefore expect him to address them in his speech with unflinching honesty, sincere sorrow, and respect for the wider discussions that will be taking place between relevant governments on this issue."

From Barron's ● Oct. 31, 2026

But she has a very close relationship with him and, even after her supposed heel turn, makes a sincere effort to get him treatment when he begins to struggle emotionally.

From Salon ● Oct. 30, 2026

I’m prepared to believe United CEO Scott Kirby’s concern about wealth inequality is sincere.

From The Wall Street Journal ● Oct. 25, 2026

She looked sincere, but he had no reason not to be wary of her.

From "Anger Is a Gift" by Mark Oshiro

“There is no sincerer love than the love of food,” reads the slip of paper.

From Washington Post ● Apr. 21, 2015

Guarantee us peace," begged Mr. Guinness, "and Germany will find she has no sincerer and no more useful friend in the world than Britain!

From Time Magazine Archive

Another Richmond editorial said, “There will in all the earth be no sincerer mourners than the people of the southern section of this Union.”

From "Ambushed!" by Gail Jarrow

His Morning and Evening Hymns introduced a simpler, sincerer style of religious poetry.

From A Brief Handbook of English Authors by Oscar Fay Adams

And yet that new poise of a sincerer manliness seemed to be charmed away suddenly by the mere touch of Pulaski Britt’s big hand.

From King Spruce, A Novel by Holman Day

And it’s our sincerest hope that all of Europe will follow your example.

From The Wall Street Journal ● Oct. 8, 2026

Parody, in this case, is the sincerest form of flattery.

From The Wall Street Journal ● Apr. 21, 2026

"What happened today in Teotihuacan hurts us deeply. I express my sincerest solidarity to the people affected and their families," Sheinbaum wrote.

From Barron's ● Apr. 20, 2026

In a statement, Unifil said: "We extend our sincerest condolences to the family, friends, and colleagues of those brave peacekeepers who gave their lives in service of peace."

From BBC ● Mar. 31, 2026

And she got results: the Maryland State Senate sent a resolution on fancy paper, saying, “Be it hereby known to all that The Senate of Maryland offers its sincerest congratulations to Henrietta Lacks.”

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot

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