eruption

An eruption is when something like a volcano or an emotion suddenly bursts out.

When we talk about an eruption, it's usually about something happening violently and quickly. You might hear about a volcanic eruption that spews ash and lava everywhere, causing damage to nearby areas. The word can also be used for other kinds of explosive events, like a flood or a riot. In some cases, it describes how someone suddenly expresses their feelings – their emotions erupt. For example, "The news of the accident erupted into a loud argument."