gleefulness

uncountable

The state of being gleeful or joyous.

Japanese Meaning

陽気で喜びに満ちた状態 / 歓喜や愉悦の感情の現れ / 喜びに包まれた様子

Her gleefulness at the surprise was contagious, lighting up the whole room.

サプライズに対する彼女の喜びは周囲に伝わり、部屋全体を明るくした。

Sense（1）

The state of being gleeful or joyous.

The woman's gleefulness was evident from her large grin.