词典释义：
释义
n.
a thing that is inappropriate, especially a remark or expression
不恰当的事物（尤指言谈或措辞）
-
she winced at their infelicities and at the clumsy way they talked .她对他们的不当言谈和拙劣的说话方式皱眉头。
[mass noun]
〈古〉 不快；不幸。
词源
"late Middle English （in the sense ‘unhappiness’）: from Latin