This article was co-authored by Adrian Lin and by wikiHow staff writer, Dan Hickey. Adrian Lin is an accent coach and course creator at Accent Amazing. With over 5 years of coaching experience, Adrian offers 1:1 coaching and video courses, and has helped hundreds of students from 40+ countries and 25+ different native languages speak with more confidence in their accents. Adrian has a BA in Linguistics from the University of Pennsylvania, where he focused on phonology, phonetics, and dialectology and was a founding member of the Penn Linguistics Society, as well as accent coaching certification from The Accent Channel. Adrian has given talks and workshops at international language conferences and on podcasts. Adrian is passionate about language education and is conversational in 8 languages (B1 or higher level), which helps him create language-specific content and teaching material, especially for Slavic and Chinese language speakers.
This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources.
Expert estimates say there are at least 171,146 words currently in use in the English language. That’s a lot of words to choose from, and we bet there are quite a few rare and obscure ones that you’ve never heard before! Keep scrolling to explore 60 of the most uncommon English words and what they mean. How many will you add to your vocabulary?
Unusual Words and Definitions
Words become obscure when they lack common usage, aren’t understood by most speakers, and/or are difficult to interpret. Examples include words like “defenestrate” (to throw something out a window) due to how highly specific it is, or “abactor” (a cattle thief) due to its irrelevance to modern culture.
Steps
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To throw out of a window. According to American accent coach Adrian Lin, “One of the most well-known unusual words in English is ‘to defenestrate,’ meaning to throw out of a window. It consists of the prefix de- meaning ‘from’, the root fenestr from the Latin fenestra meaning ‘window’, and the suffix -ate, which turns something into a verb. The weirdness of this word is its specificity. Why do we even need a word specifically meaning to throw out of a window?”[1] X Expert Source
Adrian Lin
American Accent Coach Expert Interview- Example: In a burst of anger, he threatened to defenestrate the broken computer.
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Irritated beyond self-possession or self-control. This word is borrowed directly from French (“carried away”). If your doomscrolling has you feeling so frustrated you can’t contain your screams, then you know how it feels to be emporte.
- Example: The constant news has her feeling emporte.
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Relating to or occurring in the summer and autumn. Disease experts might recognize this word as commonly relating to malaria and other seasonal illnesses, but you can absolutely use it to describe your vacation plans, too.
- Example: The disease is estivo-autumnal, with the highest risk of contraction in late summer.
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A “fatal flaw”; the error, guilt, or sin of a tragic hero in literature. This word comes from the Greek hamartanein (“to miss the mark”) and describes the fatal mistake or character flaw of a tragic hero or heroine that ultimately leads to their demise.
- Example: The main character’s harmartia was his pride and unwillingness to listen.
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Having the same or similar opinion as someone else. And if you happen to disagree? You might use the slightly more common “heterodox” (not conforming to accepted standards or beliefs; having differing or multiple opinions).
- Example: The group’s homodox viewpoints made them appear more united than their adversaries.
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The tendency to revolt or rebel against an established authority. Don’t confuse this one with “insurgence” or “insurgency” (an actual revolt or insurrection). “Insurgescence” describes the state of mind or being someone’s in before the insurgency.
- Example: He manipulated the insurgescence of the crowd to his advantage.
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A calm preoccupation with trivial or mundane details and distractions. Maybe you’re feeling content or passively distracted while you browse this list of obscure, often-forgotten words. That’s leucocholy, baby!
- Example: Spending a rainy day sorting her stamp collection by color, she felt a quiet sense of leucocholy.
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Boldly disrespectful to a person of higher standing. Remember that scene in The Hunger Games when Katniss shocked the gamemakers by shooting an apple out of their roasted pig’s mouth to get their attention? She was being quite malapert!
- Example: He’s very talented, but his malapert behavior will hold him back from getting a promotion.
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A stretching and stiffening of the trunk and extremities. Do you ever feel the need to stretch and move around when you first wake up? You probably pandiculate most mornings before you get out of bed!
- Example: She rubbed her eyes and stretched as soon as she awoke, beginning her pandiculation before leaving bed.
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To speak or act in an ambiguous or evasive way to conceal the truth. We all know someone who dances around the truth to avoid directly addressing a problem or admitting fault. Now you have a word for what they’re doing!
- Example: When her mom asked about the last time she’d seen her boyfriend, Sarah began to prevaricate, talking about homework and dance practice instead.
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A politician whose actions are controlled by someone else. We suggest using this obscure word the next time you contact your elected officials.
- Example: My opponent is nothing but a compromised quockerwodger!
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A person who remains a resident of the place or region of their birth. From Latin sedēre (“to sit”), a sedens is the opposite of a migrant or a traveler; for whatever reason, they’ve stayed put in their hometown or area.
- Example: She was a sedens of the city and had never seen a wide open plain.
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One who is very self-centered or selfish. Originally referring to a philosophical point of view claiming that only your own mind is guaranteed to exist, solipsists these days are more like narcissists or self-absorbed people.
- Example: He was a complete solipsist who never considered whether anyone else enjoyed his plans.
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A Chinese astronaut. “This is a rare niche word that refers to a Chinese astronaut, typically indicating they’re from the Chinese Space program,” Lin explains. “This word is kind of unusual because it anglicizes the Chinese word 太空 (tàikōng) meaning ‘space’ and adds it to the Greek -naut suffix.”[2] X Expert Source
Adrian Lin
American Accent Coach Expert Interview- Example: He became the first civilian taikonaut to travel to the Chinese space station.
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A person who offers opinions that extend beyond their knowledge. This rare but useful word makes for a great character descriptor in stories (and you probably know a few ultracrepidarians in real life, too).
- Example: He was an ultracreidarian, rambling on about the politics of the time in a nearly incoherent way.
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Unsociable; having or showing a disinclination for social activity. No, this doesn’t mean you’re impervious to being hit with a club. Instead, save this word for someone who truly doesn’t want to be a part of your club (literally or figuratively).
- Example: He’s just super unclubbable and prefers to work alone.
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The appearance of being real or true. Your knock-off Coach bag that looks just like the real thing has verisimilitude. The word applies to fiction, too. A story with realistic, life-like details that makes you feel like you’re really there also has verisimilitude!
- Example: The detail gives the novel some verisimilitude.
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A figure of speech in which 1 word applies to 2 others in different senses. It sounds complicated, but you probably use zeugmas all the time! For example, take the sentence, “He stole my heart and my car.” “Stole my heart” is a touching figure of speech, but when you apply “stole” to “car,” you get something a lot less romantic.
- Example: He took his hat and his leave.
Expert Q&A
Tips
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References
- ↑ Adrian Lin. American Accent Coach. Expert Interview
- ↑ Adrian Lin. American Accent Coach. Expert Interview
- https://www.merriam-webster.com/wordplay/beautiful-useless-obscure-words-volume-3
- https://wordwarriors.wayne.edu/list
- https://www.merriam-webster.com/wordplay/surprising-uncommon-words
- https://www.yourdictionary.com/articles/rare-words-useful-know
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