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.

Cady, claiming no hard feelings, insinuates himself into their world, apparently friendly, apparently helpful, so that it’s not always clear what’s sincere and what’s strategy.

From Los Angeles Times • Jun. 4, 2026

"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

Even so, “The Late Show with Stephen Colbert” was and is sincere and wholesome, even moving at times.

From Salon • May 21, 2026

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

From The Wall Street Journal • May 15, 2026

So he knew how to play his hand, whether Dasch was sincere in what he was about to tell him or not.

From Nazi Saboteurs by Samantha Seiple

Vocabulary lists containing sincere

The SAT: Words to Capture Tone, List 2

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ACT Reading Test: Words to Capture Tone, List 1

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The New SAT: Words to Capture Tone

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