infelicity
词根词缀：
felicitate v. 祝贺，庆祝
felic 幸福 + itate 表动词 → 使…幸福 → 祝贺
felicitation n. 庆祝，庆贺
felicitat 祝贺，庆祝 + ion 表名词 → 庆祝，庆贺
felicitous adj. （措辞等）恰当的，贴切的
felic 幸福 + itous …的 → 让人幸福的话语 → 恰当的
felicity n. 幸福；得体
felic 幸福 + ity 具备某种性质，状况 → 幸福；得体
infelicitous adj. 不幸的；不恰当的
in 不 + felicitous （措辞等）恰当的，贴切的 → 不幸的；不恰当的
infelicity n. 不幸；不恰当
in 不 + felicity 幸福；得体 → 不幸；不恰当
数据来源：新东方英语词汇速记大全
相关例句：
A judgmental infelicity plagued past generations.
这种不恰当的看法曾困扰了几代人。
He is unfortunate who cannot bear misfortune. You will be surprised there is so much infelicity in the world.
你会感到惊讶世界上竟有这么多不幸的事情。
The research has found out that infelicity uses are the most common translation errors of all the errors, followed by grammatical errors, over-translation, under-translation, and mistranslation.
研究结果显示，不恰当表达是最普遍的错误，其余四种错误按照频率降序排列依次为：语法错误、过译、欠译和误译。
A judgmental infelicity plagued past generations. They had had several brushes with German cavalry.
这种不恰当的看法曾困扰了几代人。他们曾和德国人的骑兵有过几次接触。
There is so much infelicity in the world.
人世间有很多不幸的事。
There is so much infelicity in the world. Among all things on earth, people are the most valuable.
人世间有很多不幸的事。世间万物，人是最宝贵的。