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sincerest

ADJECTIVE

straightforward, honest

Synonyms

STRONGEST

candid earnest forthright genuine heartfelt outspoken real serious true trustworthy

WEAK

aboveboard actual artless bona fide dead-level dear devout faithful frank guileless honest to God like it is meant natural no fooling no-nonsense on the level on the line on up and up open plain pretensionless regular righteous saintly square sure enough true-blue twenty-four carat unaffected undesigning undissembled unfeigned unpretentious up-front wholehearted

Antonyms

STRONGEST

counterfeit deceitful devious dishonest false flippant insincere invalid trivial unimportant unreal unserious 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.

See Examples For:

sincerest

“Skydive Perris offers its sincerest condolences to the individual’s family and politely asks for privacy as we mourn together as a community,” according to the statement.

From Los Angeles Times ● Jun. 2, 2026

"What happened today in Teotihuacan hurts us deeply. I express my sincerest solidarity to the people affected and their families," Sheinbaum wrote.

From Barron's ● Apr. 20, 2026

"My sincerest and heartfelt condolences continue to remain with the families of both teenagers through this unimaginably difficult time," he added.

From BBC ● Feb. 21, 2026

If imitation truly is the sincerest form of flattery, perhaps Americans should take a bow.

From The Wall Street Journal ● Feb. 12, 2026

"Your Highness, I hope I have done nothing to offend you, but if I have, my sincerest apologies," Astrid stammers out.

From "The Belles" by Dhonielle Clayton