sincerely

[sin-seer-lee] / sɪnˈsɪər li /

ADVERB

seriously, honestly

Synonyms

STRONGEST

candidly deeply earnestly genuinely naturally profoundly really truly truthfully wholeheartedly

WEAK

aboveboard frankly from bottom of heart in all conscience in all sincerity in good faith ingenuously without equivocation

Antonyms

STRONGEST

doubtfully

WEAK

dishonestly untruthfully

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"I would like to sincerely express my regret," he wrote.

From Barron's • Jun. 6, 2026

If Times employees sincerely believe that Times management is using AI to run the newspaper like a dystopian police state, can we really expect staff to file perfectly balanced copy on the potential of AI?

From The Wall Street Journal • May 27, 2026

Something you should know about me: I am, deeply and sincerely, a sketch comedy nerd.

From Salon • May 25, 2026

"We sincerely apologise for causing inconvenience and concern to our customers due to this," the company said.

From BBC • May 19, 2026

“I sincerely hope you’ll undo this curse you’ve put on us Ashtons. I do appreciate your consideration, what?”

From "The Long-Lost Home" by Maryrose Wood

Vocabulary lists containing sincerely

Commonly Misspelled Words, List 4

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

List 3

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

List 5

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!