felicity
/fəˈlɪsɪtɪ/noun
(pl. -ies) ［mass noun］
1
- intense happiness福气, 幸福, 快乐：
domestic felicity.
天伦之乐。
2
- the ability to find appropriate expression for one's thoughts措辞的恰当（或得体）：
he exposed the kernel of the matter with his customary elegance and felicity.
他以惯常的简练和恰当措辞揭示了问题的核心。
2.1
- count noun a particularly effective feature of a work of literature or art（文学或艺术作品的）别具匠心之处：
a book full of minor felicities.
一本在细小之处充满特色的书。
词源
late Middle English: from Old French felicite, from Latin felicitas, from felix, felic- 'happy'.