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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.

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

Rob Reiner was clear and sincere in his beliefs, put his money where his mouth was and made art designed to connect rather than divide us.

From Los Angeles Times • Mar. 23, 2026

First, how does one explain Hamilton’s obviously sincere conviction, delivered to Hosack and Pendleton in the boat afterward, that he had never fired his pistol?

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis