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

• artlessly
• guilelessly
• ingenuously
• innocently
• naively
• naïvely
• naturally
• unaffectedly
• unfeignedly
• unpretentiously

Examples of sincerely in a Sentence

thanked them sincerely for their help

Recent Examples on the Web

The more compelling question is how sincerely Serena and Joseph believe that their incubator town is the real future of their country and not just a one-off marketing gimmick. —Amanda Whiting, Vulture, 8 Apr. 2025

At a time when many organizations are scaling back, the leaders who choose to scale up confidence—strategically, visibly, and sincerely—will be the ones best positioned to navigate whatever comes next.. Follow me on Twitter or LinkedIn. —Scott Hutcheson, Forbes, 24 Mar. 2025

The authors of the Yale study sincerely see themselves as heralds of empirical science, whatever the political ramifications. —Michael Hiltzik, Los Angeles Times, 12 Mar. 2025

But this is a tidy and sincerely admiring overview. —Daniel Fienberg, The Hollywood Reporter, 11 Mar. 2025

Word History

First Known Use

1560, in the meaning defined above

Rhymes for sincerely

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