Which English word meaning dirty, wretched, or repulsive comes from the Latin word for filthy?

This word’s journey begins with the Latin verb *squalere*, which meant "to be rough, stiff, or caked with dirt." From this root came the adjective *squalidus*, describing a state of being filthy, neglected, and repellent. English adopted the word in the late 16th century to describe things that are extremely dirty and unpleasant, especially as a result of poverty or neglect. The related noun, "squalor," refers to the state of living in these wretched conditions.

An interesting layer to its origin lies in the sea. The Latin *squalere* is related to *squalus*, a term for a large, rough-skinned sea fish—a name now used as the genus for many sharks. The original sense of the word was tied to the imagery of being scaly, rough, and parched, much like the skin of a shark or a patch of neglected, dried-out land. This powerful visual connection to something physically coarse and unkempt fed directly into its meaning of repellent filth.

While it is still most commonly used to describe grim physical environments like a squalid alley or tenement, the word has also taken on a figurative moral dimension. It can be used to characterize actions or situations that are sordid and repulsive, lacking any moral dignity, such as a "squalid political scandal" or a "squalid betrayal."