Second grade, making sentences with a smile.

Today, I told my grandpa a joke, and he laughed happily.

Laughter is a common idiom, which means laughing heartily and describes being very happy.

The antonym of laughter: glum.

Synonyms of laughter: laugh, laugh.

Haha, other sentences of different sizes:

I accidentally slipped and everyone around me laughed. My embarrassment at that time was self-evident.

I recommend an animated film to you. Its name is bear come and go. This is a comic that can make people laugh, and it will make people happier after reading it.

In the zoo, everyone was amused by this clumsy bear.