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 of sincerely

• genuinely
• openly
• honestly
• naively
• simply
• naturally

Examples of sincerely in a Sentence

thanked them sincerely for their help

Recent Examples on the Web

Still, the energy around physical media continues to surge in sincerely exciting new ways. —Alison Foreman, IndieWire, 16 Apr. 2026

The risk of contaminating the aquifer is a long and sincerely held fear among critics like Leigh Ford, executive director of the Snake River Alliance, a nuclear watchdog. —Mark Dee april 13, Idaho Statesman, 13 Apr. 2026

In a video message, Drake spoke sincerely about how much Furtado had inspired him. —Jon Blistein, Rolling Stone, 30 Mar. 2026

But the few times they’re forced to play their hurt feelings sincerely are as forced as the moment when Grace zips her gory wedding gown back on before it’s even been washed. —Amy Nicholson, Los Angeles Times, 19 Mar. 2026

Word History

First Known Use

1560, in the meaning defined above

Rhymes for sincerely

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