seethe

Imagine a pot of water on the stove, hot and close to boiling. That image captures this word well. It usually describes a person who is full of strong emotion, especially anger, but who is not showing it openly yet. The feeling stays inside and keeps building. A character in a story might seethe with resentment after being betrayed, or a crowd might seethe with anger over unfair treatment. It can also be used for strong excitement or anticipation, though that is less common.

To seethe means to be filled with intense, often unspoken emotion, most often anger, but also resentment, frustration, or sometimes suppressed excitement. The word comes from an old word meaning "to boil," and that image still matters: seething suggests energy turning and pressing just below the surface, not yet released but ready to spill out.

Unlike a quick flash of temper, seethe usually points to a deeper feeling that lasts for a while. Someone may be annoyed by a small problem, but they might seethe over a serious insult or injustice. In stories, the word often describes a person trying hard to stay in control: they may say nothing, but anger is clearly building inside them.

Beyond human emotion, seethe can also describe physical movement. A place, crowd, or even the sea can seethe when it is full of restless, swirling motion, like water at a boil. A market might seethe with activity, or the ocean might seethe after a violent storm. Whether it describes hidden anger or a mass of moving activity, the word always carries a sense of pressure, motion, and energy that is hard to contain.