head shaking vertically

Nodding is a universally understood gesture for "yes" or agreement. It's an easy way to communicate when speaking is difficult.

It's a gesture frequently used in class or during meetings. It's also used to show that you're listening attentively to the other person.

The meaning can subtly change depending on the number of nods and their speed. Nodding quickly multiple times shows enthusiastic agreement, while a single slow nod indicates careful acknowledgment. With the increase in online meetings, this gesture has become even more important.

In Korean variety shows, exaggerated nodding by the performers often evokes laughter. In particular, the enthusiastic nodding used to express deliciousness in food content (Mukbang) has become a popular reaction internationally.