Skip to content
    Man using big words, looking intellectual.
    Word of the Day

    Sesquipedalian

    ses-kwi-puh-DAY-lee-un (/ˌsɛskwɪpɪˈdeɪliən/)

    characterised by long words; long-winded.

    "His sesquipedalian prose often left his audience bewildered rather than enlightened."

    Last updated: Monday 20th April 2026

    📜 Etymology & Origin

    The word "sesquipedalian" originates from the Latin term "sesquipedalis", which literally translates to "a foot and a half long". This Latin phrase is a compound of "sesqui-", meaning "one and a half", and "pedalis", derived from "pes" (stem "ped-"), meaning "foot". The connection to long words emerged from the Roman poet Horace, who in his Ars Poe

    Quick Answer

    Sesquipedalian describes someone who uses really long words. It comes from a Latin phrase meaning 'a foot and a half long', referring to the length of words. What's clever is that 'sesquipedalian' is itself a rather long word, so the word embodies its own meaning and makes for a bit of linguistic fun.

    In a hurry? TL;DR

    • 1Sesquipedalian means using excessively long words, often to mock pretension or demonstrate a wordy style.
    • 2The word itself is autological, meaning it describes itself, adding a layer of playful irony to its usage.
    • 3Originating from Latin for 'a foot and a half,' the term was first used to criticize bombastic language.
    • 4It's distinct from merely talking a lot; sesquipedalian focuses on the length and complexity of words used.
    • 5Scientific papers and legal arguments can sometimes suffer from a sesquipedalian style, obscuring clarity.
    • 6Use 'sesquipedalian' to critique pretentious language in a sophisticated, less overtly confrontational way.

    Why It Matters

    It's fascinating that the word "sesquipedalian" itself is an unnecessarily long word for using unnecessarily long words, a perfect example of the very phenomenon it describes.

    Sesquipedalian is an adjective used to describe someone or something that uses excessively long words. It is the linguistic equivalent of using a sledgehammer to crack a nut, turning a simple thought into a foot-and-a-half-long verbal marathon.

    • Status: Adjective and Noun
    • Pronunciation: ses-kwi-puh-DAY-lee-un (/ˌsɛskwɪpɪˈdeɪliən/)
    • Meaning: Characterised by long words or a long-winded style of communication.

    The Irony of the Long Word

    The most striking thing about sesquipedalian is that it is autological. In linguistics, an autological word is one that describes itself. Just as the word polysyllabic has many syllables, sesquipedalian is an unnecessarily long word for the act of using unnecessarily long words.

    It exists primarily to poke fun at intellectual pretension. When a writer chooses sesquipedalian instead of wordy or long-winded, they are often being playful or intentionally hypocritical. It occupies a specific niche in English where the language mocks its own capacity for bloating.

    From Roman Feet to English Prose

    The term is rooted in precise Roman measurement rather than abstract literary theory.

    Sesquipedalian in Practice

    • Scientific academic papers are often criticised for a sesquipedalian style that obscures simple findings behind a wall of jargon.
    • The barrister was known for his sesquipedalian closing arguments, which often left the jury more confused than convinced.
    • He was a true sesquipedalian, never using a five-cent word when a fifty-cent one was available in the thesaurus.

    Comparisons and Contrasts

    Unlike many synonyms for talkative, sesquipedalian refers specifically to the size of the vocabulary rather than the volume of speech.

    • Loquacious: Describes someone who talks a lot, regardless of the words used.
    • Garrulous: Implies talking excessively about trivial matters.
    • Grandiloquent: Refers to a pompous or colourful style intended to impress.
    • Succinct: The primary antonym, meaning brief and clearly expressed.

    Usage Tips

    Use this word when you want to call someone out for being pretentious without being overtly rude. It carries a scholarly weight that makes the critique feel more like an observation than an insult. However, use it sparingly. If you use it too often, you risk becoming a sesquipedalian yourself, falling into the same trap Horace warned against two millennia ago.

    Example Sentences

    "His sesquipedalian prose often left his audience bewildered rather than enlightened."

    "The academic journal was filled with sesquipedalian articles that few laypeople could understand."

    "She has a tendency to use sesquipedalian vocabulary, making her speeches quite challenging to follow."

    "The professor's lecture, though informative, was delivered in such a sesquipedalian style that many students struggled to grasp the core concepts."

    "Despite his attempts to sound intellectual, his constant use of sesquipedalian terms often came across as affected."

    Frequently Asked Questions

    Sesquipedalian is an adjective used to describe someone or something that uses excessively long words or has a long-winded style of communication.

    Yes, sesquipedalian is an autological word, meaning it describes itself. It is an unnecessarily long word for the act of using unnecessarily long words.

    The term originates from the Latin 'sesquipedalis', meaning 'a foot and a half long'. It was used by the Roman poet Horace to advise against bombastic language.

    Use sesquipedalian to gently critique someone for using unnecessarily long or pretentious words without being overly rude. It carries a scholarly tone. However, use it sparingly to avoid becoming a sesquipedalian yourself.

    The primary antonym for sesquipedalian is 'succinct', which means brief and clearly expressed.

    Sources & References