Definitions

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.

Clara Brugada Molina, head of the city's government, expressed her "most sincere condolences" to the victims' families and pledged support in the coming days.

From BBC • Jul. 1, 2026

Protestants, writes Mr. Ryrie, were hamstrung by “deep cultural, structural and political forces” that made missionary work, even for the most adaptable and sincere, “very difficult.”

From The Wall Street Journal • Jun. 19, 2026

Where does a sincere speaker using a medium with a motive fall?

From Slate • Jun. 12, 2026

Unflappably brilliant and sincere in her vocation, she proves that faith in action can be both serious and great fun to watch.

From Los Angeles Times • Jun. 8, 2026

“That’s a pity,” Duane added with sincere sadness.

From "The Very, Very Far North" by Dan Bar-el

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!