Definitions

insincere

[in-sin-seer] / ˌɪn sɪnˈsɪər /

ADJECTIVE

dishonest, pretended

Synonyms

STRONGEST

deceitful devious disingenuous evasive false hypocritical phony untruthful

WEAK

ambidextrous backhanded deceptive dissembling dissimulating double double-dealing duplicitous faithless fake hollow lying mendacious perfidious pretentious put on shifty slick sly snide two-faced unfaithful untrue

Antonyms

STRONGEST

actual direct forthright frank genuine honest just open real reliable sincere straight straightforward trustworthy truthful upright

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.

A federal jury in Los Angeles found that Left defrauded other investors with insincere opinions designed to move stock prices in his favor.

From The Wall Street Journal • Jun. 2, 2026

They’re insincere and elitist and out of touch and smug in many respects, from the perspective of a young man.

From Slate • Mar. 25, 2026

Jenrick said the two posts "show El Fattah's apology was insincere and scripted".

From BBC • Dec. 30, 2025

"We are not going to bend in the face of this insincere outrage," Leavitt told reporters at the White House.

From Salon • Mar. 26, 2025

Miss Bingley’s congratulations to her brother, on his approaching marriage, were all that was affectionate and insincere.

From "Pride and Prejudice" by Jane Austen

Vocabulary lists containing insincere

The New SAT: Words to Capture Tone

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!

The SAT: Words to Capture Tone, List 6

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!

ACT Reading Test: Words to Capture Tone, List 4

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!