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.

The two did a nice job portraying teenagers who go back and forth from sincere to ridiculously immature, but the best part was their horror when Jost fired back.

From Los Angeles Times • Apr. 12, 2026

Altman isn’t the first billionaire who might do a big media deal for reasons other than sincere interest in media.

From Slate • Apr. 7, 2026

"I think we've struggled in the west to have honest, sincere, discussions about death. Our western denial of death has been very Victorian," he said.

From BBC • Mar. 31, 2026

That’s what Auf der Maur’s roommate told her the night she came home after thinking that she had offered a sincere but thoughtful declination to the suggestion that she become the bass player in Hole.

From Salon • Mar. 24, 2026

“Admiral Faucet, I regret to inform you that my husband is indisposed. He has sent a note for me to give you expressing his sincere regrets. Here it is.”

From "The Unseen Guest" by Maryrose Wood

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

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!