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

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

For all the pushback, if district residents sincerely want a voice in Congress that can cast actual votes any time soon, retrocession is probably their best bet. —Jeremy Lott, The Washington Examiner, 13 June 2025

Democrats may sincerely believe curbing gas and coal production is essential to fighting climate change. —Matt Fleming, Oc Register, 2 June 2025

June sincerely forgives her, which comes as a relief to a woman who’s gone through a significant evolution throughout The Handmaid’s Tale. —Barry Levitt, Time, 27 May 2025

Word History

First Known Use

1560, in the meaning defined above

Rhymes for sincerely

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