The quality of being witty — of saying clever, funny things. It is the noun for the ability itself, not for one remark.

The quality of being witty機智風趣的特質——of saying clever, funny things會講聰明又好笑的話。It is the noun for the ability itself這是指那種能力本身的名詞，not for one remark不是指某一句話。

If a friend keeps coming out with sharp funny lines, you can talk about "the wittiness of her replies" or "his easy wittiness".

If a friend keeps coming out with sharp funny lines如果朋友老是講出犀利又好笑的話，you can talk about "the wittiness of her replies"你可以說"the wittiness of her replies" or "his easy wittiness"或"his easy wittiness"。

Here is the honest part, and it is the reason to be careful with this word: English already has wit for exactly this idea, and wit is far more common. Native speakers say "her wit", "a man of great wit", "quick wit".

Here is the honest part老實說，and it is the reason to be careful with this word這也是要小心用這個字的原因：English already has wit for exactly this idea英文早就有wit這個字表達一模一樣的意思，and wit is far more common而且wit常見得多。Native speakers say "her wit"母語人士會說"her wit"，"a man of great wit"、"a man of great wit"，"quick wit"、"quick wit"。

Wittiness is real English and it is in dictionaries, but it sounds heavier and more like an essay. It appears most when someone is describing a QUALITY of a piece of work — "the wittiness of the dialogue", "the wittiness of the design" — where wit alone would sound like it belongs to a person.

Wittiness is real English and it is in dictionariesWittiness是道地的英文，字典裡也查得到，but it sounds heavier and more like an essay但聽起來比較重，比較像在寫文章。It appears most when someone is describing a QUALITY of a piece of work最常出現在有人形容一件作品的「特質」時 — "the wittiness of the dialogue"——"the wittiness of the dialogue"，"the wittiness of the design"、"the wittiness of the design" — where wit alone would sound like it belongs to a person——這種情況下單用wit會聽起來像是在講一個人。

Uncountable: no "a wittiness", no "wittinesses". Formal and rather written.

Uncountable不可數名詞：no "a wittiness", no "wittinesses"沒有"a wittiness"，也沒有"wittinesses"。Formal and rather written正式，偏書面。

In speech people simply say someone is funny or clever.

In speech people simply say someone is funny or clever口語裡大家就直接說某人funny或clever。