When annoying or self-righteous nerds rage on internet message boards about some arbitrary way they've been slighted or inconvenienced somehow, for both legitimate and trivial concerns. Commonly phrased as "Seethe more, ____-(deragatory)." Often used in regards to videogames, social commentary, and politics. Used as a form of ridicule to fluster or frustrate someone who is already irate, mockingly inviting them to further perpetuate expressing their dissatisfaction online.

In terms of liquids, seethe means to bubble up as a result of being boiled.

In terms of people, seethe means to be filled with intense and often unexpressed anger.

Used to quickly shutdown an already concluded argument, usually used in conjunction with " cope " after making your point in opposition to what someone else stated, thus effectively pissing then off, but not necessarily.

A play on the actual word, which is to say someone or something is steaming hot.

A guy that is a total dick and is very bipolar.

it's a thing.

A state of mind entered, where a person reacts with a seething rage to all external stimuli, brought on by ill fortune or most often by an argument the person is losing. Symptoms include eyes closing over, reddening of the face, loss of rational thought and the increase in vocal volume coupled with an inability to speak coherently. Alcohol is often, but not always, a contributing factor to seethe mode.

Something people with neovaginas do.