joyfulness
🇺🇸
/ˈdʒɔɪflnəs/
🇬🇧
/ˈdʒɔɪflnəs/
The state or quality of being full of happiness or pleasure.
The joyfulness of the children at the playground was contagious.
遊園地で遊ぶ子供たちの喜びは伝染的でした。