> Other English exercises on the same topics: Games | Find the word [Change theme]
	> Similar tests: - Placement test beginners: Check your spelling - Vocabulary: greeting people - Give your opinion - Cardinal and ordinal numbers - How to talk about the weather - Vocabulary: asking and answering - Vocabulary: on the phone - Vocabulary: at the restaurant
	> Double-click on words you don't understand

The Longest Words in English - English lesson

English has some very long words—sometimes with more than 20 letters! These words are often used in science, medicine, or special fields. Learning them can help you improve your vocabulary and impress others.

#WordLettersMeaning (Simple English)

1	antidisestablishmentarianism	28	Opposition to removing a church's official status
2	floccinaucinihilipilification	29	The act of thinking something is worthless
3	pneumonoultramicroscopicsilicovolcanoconiosis	45	A lung disease caused by inhaling very fine dust
4	supercalifragilisticexpialidocious	34	A made-up word meaning something extraordinary
5	incomprehensibilities	21	Things that cannot be understood
6	uncharacteristically	20	In a way that is not usual for someone
7	counterrevolutionaries	22	People who oppose a revolution
8	psychopharmacological	22	Related to medicines that affect the brain
9	disproportionableness	21	The quality of being out of proportion
10	radioimmunoelectrophoresis	26	A medical lab technique
11	electroencephalographs	23	Devices that record brain activity
12	institutionalization	20	The process of becoming an institution
13	misinterpretations	20	Wrong or incorrect understandings
14	internationalization	20	The process of becoming international
15	overintellectualization	24	Thinking too much about intellectual things
16	semiautobiographical	20	Partly about one's own life
17	subcompartmentalization	24	Division into smaller parts
18	unconstitutionality	20	Being against the constitution
19	thermoelectromotive	20	Related to electric force produced by heat
20	counterproductiveness	20	The quality of being harmful or unhelpful

---

🤔 How to use these words?

• Practice pronouncing them out loud to get comfortable with the sounds.

• Write simple sentences using these words to remember them better.

• Pick your favorite long word and learn its meaning deeply.

• Have fun trying to spell the longest words!

🎬 Help: how to see videos

Advanced Twitter Share
English exercise "The Longest Words in English" created by webmaster with The test builder. [More lessons & exercises from webmaster]
Click here to see the current stats of this English test

Please log in to save your progress.

1. What does antidisestablishmentarianism mean? Opposition to removing a church's official statusSupport for removing a church's official statusA type of government systemI don't know

2. Which word means "fear of the number 666"? PneumonoultramicroscopicsilicovolcanoconiosisHexakosioihexekontahexaphobiaFloccinaucinihilipilificationI don't know

3. What is pneumonoultramicroscopicsilicovolcanoconiosis? A lung disease caused by inhaling fine dustA chemical elementA type of volcanic eruptionI don't know

4. What does supercalifragilisticexpialidocious mean? Something extraordinary or fantasticA very long English wordA medical termI don't know

5. Which word means "the act of estimating something as worthless"? FloccinaucinihilipilificationCounterproductivenessInstitutionalizationI don't know

6. What does internationalization mean? The process of becoming invisibleThe process of becoming internationalThe process of becoming smallerI don't know

7. What does misinterpretations mean? Wrong or incorrect understandingsOverthinking somethingCorrect understandingsI don't know

8. Which word relates to medicines that affect the brain? ThermoelectromotivePsychopharmacologicalUnconstitutionalityI don't know

9. What does counterproductiveness mean? Being harmful or unhelpfulBeing helpful and productiveBeing neutralI don't know

10. What are electroencephalographs? Machines that clean the airDevices that record brain activityInstruments for measuring temperatureI don't know

---

End of the free exercise to learn English: The Longest Words in English
A free English exercise to learn English.
Other English exercises on the same topics : Games | Find the word | All our lessons and exercises