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

Parody, in this case, is the sincerest form of flattery.

From The Wall Street Journal ● Apr. 21, 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

Unifil said of the two deaths on Monday: "We extend our sincerest condolences to the family, friends, and colleagues of those brave peacekeepers who gave their lives in service of peace."

From BBC ● Mar. 30, 2026

Life-altering in the sincerest sense of the word, “The Mother Lode” comedically chronicles Rosebud Baker’s journey into motherhood, in real time.

From Los Angeles Times ● Dec. 10, 2025

Please accept my sincerest apology for my disrespectful behavior in not attending the opening ceremony.

From "Endgame" by Frank Brady