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.

In a statement, Henley College said its "thoughts and sincere condolences are with the student's family and friends at this extremely difficult time".

From BBC • 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

Blasting from my car speaker, Dr. Becky sounds sincere to the point of tearful.

From Slate • May 10, 2026

“Flowers For Men” was written from a sincere curiosity about mens’ strictures, bad influences and better aspirations.

From Los Angeles Times • May 8, 2026

But when she kisses Heather, she is entirely sincere.

From "The Cruel Prince" by Holly Black

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!