spleen

This word has two lives. First, it names an organ in your body that helps filter blood and support your immune system. But in older and literary English, it also means bad temper, bitterness, or resentful anger. Picture someone carrying around a quiet storm of irritation all day.

Historically, people believed this organ was linked to anger and dark moods. So, if you say someone has "a touch of the spleen," you mean they are in a foul mood. You might say, "Old Man Hemlock woke up with a terrible case of the spleen this morning," or "Don't bother him now; he's full of spleen."

The word "spleen" has a fascinating double life. In the body, it is an organ in the abdomen that filters blood and helps the body fight infection. But for centuries, the word also carried a metaphorical meaning: intense ill-temper, bitterness, resentment, or even gloom.

To be "full of spleen" means to be in a particularly bad mood, prone to complaining, and generally unpleasant to be around. It's stronger than simply being annoyed; it suggests a deep-seated grumpiness and a tendency toward negativity.

This usage comes from ancient medicine and the theory of the "four humors," in which the spleen was linked with black bile and, as a result, with dark moods and melancholy. Writers like Shakespeare often used "spleen" to describe an irritable, angry, or impulsive state. In older writing, it can point to sharp anger, lasting bitterness, or moody gloom.

While we no longer think of the spleen as an organ of emotion, the metaphorical meaning still appears in English literature and set phrases. You might say, "He vented his spleen on social media," meaning he poured out his anger and frustration. Or, "She answered with a touch of spleen," meaning her reply carried a trace of bitterness or ill temper. Today, this sense is mostly literary or old-fashioned, while the physical organ remains the everyday meaning.

So, whether you're talking about anatomy or attitude, "spleen" represents both a physical part of the body and a state of mind characterized by bitterness and ill-temper.