funniness

uncountable countable

(uncountable) The quality of being funny. / (countable) Something funny; a quirky or amusing statement, mannerism, etc.

Japanese Meaning

面白さ、おかしさ - 物事が笑いを誘う性質や状態。 / 滑稽さ - 独特でユーモラスな印象を与える特徴。 / ユーモラスな側面、奇抜な発言や振る舞いなど笑いをもたらす要素

The funniness of her stories had everyone laughing all night.

彼女の話の面白さで、皆は一晩中笑っていた。

Sense（1）

(uncountable) The quality of being funny.

Sense（2）

(countable) Something funny; a quirky or amusing statement, mannerism, etc.

He, Cardew, had sat at home, accepting readymade conclusions, the shallow funninesses of imbeciles and clowns...

funninesses

（ plural ）