sincerely

adverb

sin·​cere·​ly sin-ˈsir-lē 

sən-

: in a sincere or truthful way : with truth, genuineness, or straightforwardness

apologizing sincerely

I am sincerely sorry for your loss.

George Clooney, a pleasant man, tries sincerely to give some credibility to Kelvin, and if he doesn't earn our belief, at least he has our sympathy.

—Stanley Kauffman

The room was quiet until a student in the back of the room let out an enormous belch and said, not too sincerely, "Sorry."

—E. L. Konigsburg

—often used as a complimentary close with or without yours

… Thank you for your attention to this matter. Sincerely, Robert Brown

… Sincerely yours, John Smith

… Yours sincerely, Jane Doe

Synonyms

• genuinely
• openly
• honestly
• naively
• naïvely
• naturally
• freely
• simply

Examples of sincerely in a Sentence

thanked them sincerely for their help

Recent Examples on the Web

The crucial element isn't avoiding errors, which is impossible, but rather owning them, apologizing sincerely, and committing to improvement. —Julie Kratz, Forbes.com, 13 July 2025

Because my beliefs are sincerely rooted in a flawed human’s attempts at decency — with equality for all, and discriminating against no one. —Todd Gilchrist, IndieWire, 11 July 2025

At sentencing, Woods’ attorney reiterated that Woods sincerely believed the block was about to erupt in gunfire and said his client has almost no criminal history, save for a years-old misdemeanor conviction. —Nate Gartrell, Mercury News, 9 June 2025

Al is sincerely devoted to her profession, and sees the act of putting smiles on the faces of sick children as a vocation. —Christian Zilko, IndieWire, 13 June 2025

Word History

First Known Use

1560, in the meaning defined above

Rhymes for sincerely

• cavalierly
• austerely
• severely
• clearly
• dearly
• merely
• nearly
• queerly
• yearly