insincere

adjective

in·​sin·​cere ˌin-sin-ˈsir 

-sən-

: not sincere : hypocritical

insincerely adverb

insincerity

ˌin-sin-ˈser-ə-tē 

also -ˈsir-

noun

Synonyms of insincere

• fake
• meaningless
• superficial
• double
• hypocritical
• lip
• hollow
• phony
• strained
• artificial

Examples of insincere in a Sentence

He said he was sorry, but I could tell that he was being insincere.

the insincere compliments of a spiteful gossip

Recent Examples on the Web

Using artificial intelligence to compose a social media post in the wake of a tragedy, or using it to write a fan letter to an Olympic athlete, comes off as insincere. —Gayle Rogers, The Conversation, 17 Mar. 2026

That being said, its professional technical aspects just add to the impression that this is a glib and insincere effort, trying to graft a fun moviegoing experience onto a depressing story about hateful people reveling in each other’s pain. —Katie Rife, IndieWire, 16 Mar. 2026

But this initiative struck many of us as insincere from the beginning — one committee to co-sign the death sentence, another to swing the ax. —Randy Ribay, Mercury News, 3 Mar. 2026

Which is not to say that Amodei is being insincere. —Jeremy Kahn, Fortune, 27 Jan. 2026

Word History

Etymology

Latin insincerus, from in- + sincerus sincere

First Known Use

1634, in the meaning defined above

Rhymes for insincere

• auctioneer
• bandelier
• belvedere
• bombardier
• brigadier
• buccaneer
• cavalier
• chandelier
• chanticleer
• chevalier
• commandeer
• disappear

Kids Definition

insincere

adjective

in·​sin·​cere ˌin(t)-sin-ˈsi(ə)r 

: not sincere : hypocritical

insincerely adverb

insincerity

-ˈser-ət-ē 

also -ˈsir-

noun