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

But sincerely, there was almost absolutely no way this was going to go well. —Literary Hub, 13 Nov. 2025

Van der Velden — either sincerely or at a level of satire approaching the Swiftian — countered that no one’s job was impacted and that Tilly Norwood required a lot of human artistry, just of a different kind. —Gene Maddaus, Variety, 11 Nov. 2025

Over Zoom Wendel seems sincerely excited these changes and clear-eyed about the reasons for them. —Katie Bain, Billboard, 10 Nov. 2025

Even among some voters who were sincerely uncomfortable with Mamdani’s past rhetoric, many rationalized that an authentic Democrat with a pulse was still better than someone who might be manipulated from afar. —Philip Elliott, Time, 5 Nov. 2025

Word History

First Known Use

1560, in the meaning defined above

Rhymes for sincerely

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