Ill temper is a term used to describe a person's bad mood or anger. It is often associated with physical symptoms such as SPLEEN, IRE, BILE, NASTINESS, ASPERITY, and VINEGAR. SPLEEN is a six-letter word meaning a feeling of irritability or ill humor. IRE is a three-letter word meaning intense anger or wrath. BILE is a four-letter word meaning a bitter or acrid substance secreted by the liver. NASTINESS is a nine-letter word meaning unpleasantness or rudeness. ASPERITY is an eight-letter word meaning harshness or severity. VINEGAR is a seven-letter word meaning a sour-tasting liquid made from fermented ethanol. All of these words are related to the term ill temper and can be used to describe a person's bad mood or anger.