sincere

[sin-seer] / sɪnˈsɪər /

ADJECTIVE

straightforward, honest

Synonyms

STRONGEST

candid earnest for real forthright genuine heartfelt outspoken real serious true trustworthy

WEAK

24-carat aboveboard actual artless bona fide dead-level dear devout faithful frank guileless honest-to-God honest-to-goodness like it is meant natural no-fooling no-nonsense on the level on the line on the up and up open plain pretensionless regular righteous saintly square sure-enough true-blue unaffected undesigning undissembled unfeigned unpretentious up-front wholehearted

Antonyms

STRONGEST

counterfeit deceitful devious dishonest false flippant insincere invalid untrustworthy

WEAK

tricky

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.

This sincere tone dampens much of the movie’s goofball appeal.

From The Wall Street Journal • Apr. 28, 2026

"Pakistan remains committed to serve as an honest and sincere facilitator - working tirelessly to advance durable peace and lasting stability in the region," Sharif wrote on X.

From Barron's • Apr. 26, 2026

"What happened today in Teotihuacán deeply pains us. I express my most sincere solidarity with the affected individuals and their families," she wrote in Spanish.

From BBC • Apr. 20, 2026

As journalist Jane Coaston argued on the Hysteria podcast, birth rate panic is rarely sincere.

From Salon • Apr. 20, 2026

There was something rather sincere and pathetic about her going off to a shop in London and buying me these books because she knew I was fond of painting.

From "Rebecca" by Daphne du Maurier

Vocabulary lists containing sincere

The SAT: Words to Capture Tone, List 2

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!

ACT Reading Test: Words to Capture Tone, List 1

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!

The New SAT: Words to Capture Tone

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!