optimism
/ˈɒptɪmɪzəm/noun
mass noun
1
- hopefulness and confidence about the future or the successful outcome of something乐观：
the talks had been amicable and there were grounds for optimism.
会谈是友好的, 有理由乐观。
2
- Philosophy the doctrine, especially as set forth by Leibniz, that this world is the best of all possible worlds【哲】乐观主义 （尤指莱布尼兹提出的学说, 认为这个世界是所有可能的世界中最美好的）。
2.1
- the belief that good must ultimately prevail over evil in the universe乐观主义。
派生词
optimist
noun词源
mid 18th cent.: from French optimisme, from Latin optimum 'best thing' （see OPTIMUM）.