sincere
Americanadjective
adjective
-
not hypocritical or deceitful; open; genuine
a sincere person
sincere regret
-
archaic pure; unadulterated; unmixed
-
obsolete sound; whole
Synonym Usage
See earnest 1.
Other Word Forms
Etymology
Origin of sincere
First recorded in 1525–35; from Latin sincērus “pure, clean, untainted”
Explanation
Being sincere is being genuine. If someone compliments you on your outfit, but you notice them rolling their eyes when they think you’re not looking, they probably weren't being sincere. If you've been offered a sincere thanks for something you've done, the person is probably really grateful. Sometimes when people say "thank you," they don't always mean it, but when they add the adjective sincere, the emphasis is usually for a very good reason. You may hear a charity sending out a sincere thanks to sponsors for their donations, which help keep the charity running.
Vocabulary lists containing sincere
The SAT: Words to Capture Tone, List 2
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
ACT Reading Test: Words to Capture Tone, List 1
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
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!
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.
Some see his concerns coming from a sincere sense of what’s at stake from technology that could rank up there with the development of electricity or the steam engine in terms of social upheaval.
From The Wall Street Journal • Jun. 20, 2026
Where does a sincere speaker using a medium with a motive fall?
From Slate • Jun. 12, 2026
Ana Milagros, 64, who was waving a Vatican flag, said she thought the US-born pope seemed "approachable" and "very sincere".
From Barron's • Jun. 7, 2026
In their joint statement, West Hollywood and the WeHo Pride team expressed their appreciation for “the respectful and sincere dialogue” around both the event and the “role and significance” of Pride honorees.
From Los Angeles Times • Jun. 4, 2026
Special Agent Gonzales smiled, a sincere smile that made his full lips curl up softly at the corners.
From "Summer of the Mariposas" by Guadalupe García McCall
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
