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.

"I also take this opportunity to express my sincere gratitude to the government and people of India, the United States and all our supporters," he said.

From Barron's • May 27, 2026

Rossini’s devotion, undoubtedly sincere, was never permitted to cloud his humor.

From The Wall Street Journal • May 15, 2026

As historian Rick Perlstein related in “Nixonland: The Rise of a President and the Fracturing of America,” Nixon’s anti-communist agit-prop, honed over many decades, was sincere — but it was only part of the story.

From Salon • May 14, 2026

"I would like to offer my sincere apologies to everyone involved."

From BBC • May 13, 2026

So when you’re evaluating whether she’s sincere in her belief or a lunatic, you should know she’s got more degrees, speaks more languages, and has seen more of the world than most people you know.

From "Everything Sad Is Untrue" by Daniel Nayeri

Vocabulary lists containing sincere

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The New SAT: Words to Capture Tone

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