Adjective insincere has 1 sense
- insincere - lacking sincerity; "a charming but thoroughly insincere woman"; "their praise was extravagant and insincere"
Antonyms: sincere, bona fide, cordial, fervent, dear, devout, earnest, heartfelt, honest, genuine, true, unfeigned, heart-whole, wholehearted, whole-souled
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