Insincere
来自Big Physics
Safin（讨论 | 贡献）2022年4月29日 (五) 05:09的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=insincere+etymology&newwindow=1&hl=en ref] mid 17th century: from Latin insincerus, from…”的新页面）
mid 17th century: from Latin insincerus, from in- ‘not’ + sincerus ‘sincere’.
wiktionary
From Latin insincerus.
etymonline
insincere (adj.)
1620s (implied in insincerely), from Latin insincerus "spoiled, corrupted; not genuine, not pure, adulterated," from in- "not" (see in- (1)) + sincerus "genuine, candid" (see sincere). Related: Insincerely.
