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    Close-up medical image of abnormal skin growth with a rough, textured surface.
    Word of the Day

    Excrescence

    ek-KRES-əns (/ɪkˈkrɛsəns/)noun

    an abnormal outgrowth or enlargement (often used for a growth or unattractive addition).

    "The new extension on the historic building was widely criticised as an ugly excrescence, completely out of character with the original design."

    Last updated: Monday 20th April 2026

    📜 Etymology & Origin

    The word 'excrescence' originates from the Latin verb 'excrescere', meaning 'to grow out' or 'to grow forth'. This in turn is formed from 'ex-' (meaning 'out of' or 'from') and 'crescere' (meaning 'to grow'). It entered the English language in the late 14th century, initially referring to a natural or abnormal outgrowth on a body or plant, such as

    Quick Answer

    An excrescence is an ugly or unwanted growth, like a wart or a ghastly building extension. It's fascinating how this word, once just a medical term, now carries a strong negative connotation, often used to describe anything that feels out of place or adds an unpleasant burden.

    In a hurry? TL;DR

    • 1An excrescence is an unwelcome, abnormal, or unsightly outgrowth, distinct from a simple addition.
    • 2The term, originally medical, is now used critically for aesthetically displeasing or superfluous additions.
    • 3It describes something that intrudes upon or distorts an existing form, like a disfiguring building extension.
    • 4Excrescence bridges the gap between medical and aesthetic flaws, implying a parasitic or erroneous addition.
    • 5Use it to critique elements that feel tacked on, bloated, or violate the original integrity of something.
    • 6The word's pejorative use dates back to the 17th century, highlighting a long-standing human concern with ill-fitting growths.

    Why It Matters

    This word is surprisingly useful for criticising anything that feels like an ugly, unwelcome addition, from a wart to a botched building extension.

    An excrescence is an abnormal growth or disfiguring addition, ranging from a physical wart to an architectural eyesore that ruins a city skyline. It describes something that has sprouted where it does not belong, often carrying a sense of being unwelcome or superfluous.

    The Quick Summary

    • Definition: A natural or abnormal outgrowth, often unsightly or unnecessary.
    • Origin: Latin excrescere, meaning to grow out.
    • Modern Usage: Used to criticise ugly buildings, redundant laws, or physical bumps.
    • Key Insight: While it started as a neutral medical term, it is now the ultimate insult for anything that feels tacked on or bloated.

    Why It Matters

    Understanding the word excrescence allows you to precisely describe the moment something functional becomes distorted by a purposeless addition.

    At a Glance

    • Part of Speech: Noun
    • Pronunciation: ek-KRES-uns (/ɪkˈkrɛsəns/)
    • Meaning: An unattractive or abnormal outgrowth.

    The Anatomy of an Outgrowth

    To call something an excrescence is to say it is more than just ugly; it is an intrusion. In the biological sense, it refers to a bunion, a gall on a tree, or an enlargement of a bone. However, the word earns its keep in the realm of sharp criticism. Unlike a mere addition, an excrescence feels like a parasite on the original form.

    In architecture, critics frequently use the term to savage modern extensions on historic buildings. When a glass box is bolted onto a Victorian manor, it is rarely called a wing; it is branded an excrescence. It implies that the new structure was not designed with the whole in mind, but rather erupted out of it like a biological error.

    The word fills a specific gap in our vocabulary. It bridges the distance between the medicinal and the aesthetic. While a tumor is a medical catastrophe, an excrescence is an aesthetic one. According to the Oxford English Dictionary, the metaphorical use of the word to describe moral or social growths appeared as early as the 1600s, proving that humans have always been bothered by things that do not fit.

    Examples in Context

    • Architecture: The new penthouse was a glass and steel excrescence that blocked the view of the cathedral for everyone else.
    • Biology: The botanist noted a strange fungal excrescence appearing on the underside of the oak leaves.
    • Politics: Critics argued the new subcommittee was a bureaucratic excrescence that served no purpose other than to delay the vote.
    • Language: Some purists view the emoji as a digital excrescence that threatens the clarity of written English.

    Synonyms and Antonyms

    • Synonyms: Protrusion, outgrowth, carbuncle, projection, deformity.
    • Antonyms: Depletion, indentation, cavity, reduction, shrinkage.

    Practical Usage Tips

    Use excrescence when you want to sound clinical but cutting. It is more sophisticated than ugly and more specific than addition. It works best when describing something that feels like it has grown out of control, such as a sprawling suburb or an overly complicated legal contract.

    Is an excrescence always a physical object?

    No, it can be abstract. You can describe a redundant paragraph in a book or an unnecessary department in a corporation as an excrescence.

    How does it differ from a growth?

    A growth can be positive, such as economic growth. An excrescence is almost always viewed as negative, abnormal, or an unsightly surplus.

    Is there a verb form?

    The verb form is excresce, but it is rarely used in modern English. Most writers stick to the noun to describe the result of the growing.

    Key Takeaways

    • Meaning: It refers to an abnormal or unwanted outgrowth.
    • Origin: Derived from the Latin word for growing out.
    • Usage: Ideal for architectural criticism, biological descriptions, or calling out bureaucracy.
    • Impact: It suggests that something has been added in a way that is unnatural or disfiguring.

    If you enjoyed learning about excrescence, you might also like the history of the word Palingenesis or the architectural origins of Gargoyles. To learn more about unusual descriptions, see our guide on Aesthetic terms.

    Example Sentences

    "The new extension on the historic building was widely criticised as an ugly excrescence, completely out of character with the original design."

    "Doctors were concerned about the small excrescence on her skin, so they scheduled a biopsy to determine its nature."

    "His overly elaborate prose was not elegant; rather, it was full of unnecessary excrescences that made the text difficult to read."

    "The gall on the oak tree was a natural excrescence, formed by the tree's reaction to an insect's presence."

    "Many residents viewed the towering, garish billboard as an unwelcome excrescence on the otherwise picturesque landscape."

    Frequently Asked Questions

    An excrescence is an abnormal or unsightly outgrowth, or a disfiguring addition to something, often feeling unwelcome or superfluous.

    In architecture, an excrescence is often used to describe an ugly or unnecessary modern addition to a historic building, like a glass box added to a Victorian manor.

    The word excrescence comes from the Latin verb 'excrescere,' meaning 'to grow out.'

    Yes, in biology, an excrescence can refer to a physical outgrowth like a wart, a bunion, or a gall on a tree.

    Sources & References