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  1. Longest word in English - Wikipedia

    The longest officially recognized place name in an English-speaking country is Taumata­whakatangihanga­koauau­o­tamatea­turi­pukaka­piki­maunga­horo­nuku­pokai­whenua­ki­tana­tahu …

  2. What Is the Longest Word In English? Here’s a List of 15 Lengthy Words

    Apr 11, 2023 · At over 180,000 letters long, the chemical name of the protein titin is often said to technically be the longest English word. If spoken out loud, this word takes over three hours to say!

  3. The Longest Long Words List - Merriam-Webster

    The longest word entered in most standard English dictionaries is Pneumonoultramicroscopicsilicovolcanoconiosis with 45 letters. Our definition is "a lung disease …

  4. 13 of the Longest Words in the English Language - ThoughtCo

    May 11, 2025 · Take your vocabulary to the next level with this list, featuring 13 of the longest words in the English language.

  5. 19 longest words in English with up to over 45 letters

    Aug 19, 2025 · Prepare to challenge your memory and discover the jaw-dropping lengths of the longest words in English.

  6. Longest - definition of longest by The Free Dictionary

    Define longest. longest synonyms, longest pronunciation, longest translation, English dictionary definition of longest. adj. long·er , long·est 1. a. Extending or traveling a relatively great distance. b. …

  7. Is Lake Pontchartrain Causeway a Guinness World Record for longest?

    Mar 20, 2026 · Lake Pontchartrain Causeway in Louisiana is the longest bridge in the U.S. and is the longest bridge over water in the world. Here's how long it spans.

  8. LONGEST Synonyms & Antonyms - 73 words | Thesaurus.com

    Find 73 different ways to say LONGEST, along with antonyms, related words, and example sentences at Thesaurus.com.

  9. What Is the Longest Word in English? - Reader's Digest

    May 29, 2025 · There are about a million words in the English language, but do you know the longest word in English? You may think it’s antidisestablishmentarianism, at 28 letters long.

  10. 16 Longest Things Ever Measured - go2tutors.com

    Aug 11, 2025 · Here are 16 of the longest things ever officially measured. As of 2016, the Gotthard Base Tunnel is the longest railway tunnel in the world. This engineering marvel stretches 35.4 miles …