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.

"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

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

From The Wall Street Journal • Feb. 12, 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

"On behalf of Durham Constabulary I wish to publicly offer my sincerest apologies to those victims and their families for those failures," she said.

From BBC • Nov. 12, 2025

“Mrs. Jackson, again, my sincerest apologies that we haven’t spoken before today.”

From "On the Come Up" by Angie Thomas