Optimist
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 20:40的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=optimist+etymology&newwindow=1&hl=en ref] mid 18th century: from French optimisme, from L…”的新页面）
mid 18th century: from French optimisme, from Latin optimum ‘best thing’ (see optimum).
wiktionary
From French optimiste, from Latin optimus(“best”).
etymonline
optimist (n.)
1759, "one who believes in metaphysical optimism," from French optimiste (1752); see optimism + -ist. Meaning "person of a hopeful disposition" is recorded by 1766.
