excrescence

The word excrescence describes something that grows out from another thing, often abnormally or undesirably. It can refer to a physical outgrowth like a wart, tumor, fungus, or barnacle—something that protrudes and feels foreign to its host. "A small excrescence appeared on the tree trunk," suggests an unusual bump or growth.

However, excrescence isn't limited to the physical world. It can also describe something added to a larger whole that is considered unnecessary, unwanted, or even detrimental. A rambling digression in a conversation, an overly complicated clause in a contract, or a superfluous detail in a piece of writing could all be described as excrescences. "The lengthy footnote felt like an excrescence, distracting from the main argument."

Historically, excrescence was often used to describe errors or corruptions in texts—additions that distorted the original meaning. This sense of something being "grown on" and spoiling a pure form still lingers in its modern usage.

It's important to note that an excrescence isn't necessarily malicious; it simply grows out and is often perceived as unwanted or disruptive. It implies a deviation from the norm, a protrusion that doesn't quite belong. So whether you're describing a physical growth or an unwelcome addition to something more abstract, excrescence points to something that has sprouted beyond its proper place.