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

My parents’ house is sincerely stunning; my mom designed the whole thing. —Bryce Jones, Better Homes & Gardens, 14 Oct. 2025

Gee previously rejected many of Dunbar’s other legal claims, but left it up to a jury to decide whether his religious beliefs are sincerely held. —Gene Maddaus, Variety, 13 Oct. 2025

The two women hug; Davina sincerely wishes Julia well. —Kimberly Roots, TVLine, 10 Oct. 2025

That doesn’t mean all accommodations are unnecessary or that some kids don’t sincerely benefit from a system that adapts to their needs. —Kathryn Vanarendonk, Vulture, 6 Oct. 2025

Word History

First Known Use

1560, in the meaning defined above

Rhymes for sincerely

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