10 Longest Known Palindromes - Largest.org (2024)

A palindrome is a word, phrase, or sentence that reads the same way both forwards and backwards. These can be difficult to construct effectively, and some of them sound much less rhythmic than you might expect when reading them aloud–especially once they start getting longer!

So, just how long can the lengthiest palindromes get? Finding the longest known palindromes is a tricky feat, since anyone can make one if they keep trying! Today we’ll take a look at 4 of the longest palindromic words and 6 of the longest known palindromic sentences and rank them according to length. We’ll also learn a little bit about each one!

  1. Rotavator

Length: 9 characters
Meaning: A machine with rotating blades that tills soil
Type: Noun
Subject Matter: Gardening and farming

10 Longest Known Palindromes - Largest.org (1) Source: wikimedia.org

A rotavator is a highly useful agricultural tool that is used to till soil, break up the ground, and work surface materials down into the earth. This tool is primarily used to prep the ground for planting, both by stirring up compacted soil and by working in various fertilizers. Specifically, “rotavator” refers to the trademarked Howard Rotavator, which sports two wheels and allows the operator to control the speed of the tilling blades.

Did you know?

Rotavator machines come with 4-18 horsepower and are built with either diesel or gasoline engines.

  1. Malayalam

Length: 9 characters
Meaning: A Dravidian language
Type: Noun
Subject Matter: Linguistic, cultural

10 Longest Known Palindromes - Largest.org (2) Source: wikimedia.org

This Dravidian language is spoken by the Malayali people who originate in Kerala, India. India does not have a single national language, and Malayalam is one of the 22 officially scheduled languages that correspond to various Indian states. Malayalam displayed its own written alphabet by the early years of the 13th century, but the written language was difficult to print later on and was adapted into a more simplified, modern version.

Did you know?

Approximately 38 million people in the world speak the language of Malayalam.

  1. Detartrated

Length: 11 characters
Meaning: Having removed tartrates
Type: Preterite
Subject Matter: Chemistry and winemaking

10 Longest Known Palindromes - Largest.org (3) Source: wikimedia.org

The official definition of this palindromic word is: “Of or relating to something from which tartrates have been reduced or removed through a detartration process.” This process is actually an important part of winemaking, since it reduces the acidity of the wine and decreases sourness and tartness as a result! The detartration process is also used to reduce sourness in the flavor of non-fermented fruit juices.

Did you know?

The main byproduct of detartration in winemaking is potassium bitartrate, which is also known as Cream of Tartar and often used in baking!

  1. Tattarrattat

Length: 12 characters
Meaning: The sound made by knocking on a door
Type: Onomatopoeia
Subject Matter: Sounds

10 Longest Known Palindromes - Largest.org (4) Source: wikimedia.org

On top of being a palindrome, “tattarrattat” is also an onomatopoeia, which means that it’s a word that sounds just like what it’s describing. Other good examples of onomatopoeias include words like “buzz” and “pop.” In this case, the word is mimicking the sound created by rapping on a door. This word was originally coined by James Joyce in his famous literary work Ulysses and is one of the most famous examples of a palindrome.

Did you know?

James Joyce had terrible eyesight and needed approximately a dozen different eye surgeries throughout his lifetime!

  1. Saippuakivikauppias

Length: 19 characters
Meaning: Soapstone vendor
Type: Noun
Subject Matter: Material sales

10 Longest Known Palindromes - Largest.org (5) Source: soapstones.com

Saippuakivikauppias is listed in the Guinness Book of World Records as the longest known single-word palindrome. It is a Finnish word that literally translates to “a traveling salesman who sells lye or caustic soda,” and is used to describe a soapstone vendor. Nevertheless, this word is primarily recognized as a curiosity and likely only used as an example of a palindrome.

Did you know?

“Saippuakauppias” is an extremely similar Finnish compound word that also refers to a soap vendor.

  1. A man, a plan, a canal: Panama

Length: 7 words, 24 characters
Author: Leigh Mercer or unknown
Type: Demonstration of a palindrome
Subject Matter: Various

10 Longest Known Palindromes - Largest.org (6) Source: wikimedia.org

Leigh Mercer first published this memorable palindrome in the November issue of Notes & Queries in 1948. However, many people are convinced that someone else surely must have come up with the palindrome earlier than that. As yet, the first origins of this phrase are still unknown! David Fletcher also wrote a book titled A man, a plan, a canal: Panama that follows a pair of travelers who visit Panama to explore the area and discover themselves in the process.

Did you know?

Peter Schutes also wrote a short novel with the same title that features highly graphic erotic subject matter that explores male sexuality.

  1. Sir, I demand, I am a maid named Iris.

Length: 9 words, 30 characters
Author: Unknown
Type: Standalone sentence
Subject Matter: Demonstration of a palindromic sentence

10 Longest Known Palindromes - Largest.org (7) Source: pxhere.com

“Sir, I demand, I am a maid named Iris” is a palindrome that has been repeatedly cited as a great example throughout history and passed around so much that no one can find the original author! The short version, “Sir, I’m Iris,” is often recited alongside its catchy counterpart “Madam, I’m Adam.” The full palindrome is also included in The Word Circus: A Letter-perfect Book by Richard Lederer, which contains plenty of other quirky phrases as well.

Did you know?

The Word Circus: A Letter-perfect Book contains several other great examples of palindromic phrases.

  1. “Dammit I’m Mad . . . ”

Length: 224 words, 732 characters
Author: Demetri Martin
Type: Poem
Subject Matter: Everyday absurdities

10 Longest Known Palindromes - Largest.org (8) Source: flickr.com

Demetri Martin is a person of many talents, having built up experience as a comedian, cartoonist, actor, director, and musician. He also applied his wit in the form of poetry when he wrote “Dammit I’m Mad,” a very memorable palindromic poem! Demitri’s poem seems to walk the line between quirky nonsense and thought-provoking existential questions perhaps intended to leave the reader wondering if they’re mad as well.

Did you know?

Demitri Martin is known partially for his appearances on The Daily Show and his own series on Comedy Central.

  1. Satire: Veritas

Length: 58,795 characters
Author: David Stephens
Type: Novel
Subject Matter: Long, challenging palindromes

10 Longest Known Palindromes - Largest.org (9) Source: news.harvard.edu

This novel by David Stephens is said to be an impressive palindrome in its entirety, but unfortunately, it’s next to impossible to track the book down and give it a read. Much of the work was handwritten, and some of it was never typed up before the author passed away. Satire: Veritas is often referred to as a “lost novel,” but that doesn’t stop people from discussing how tricky it must have been to read! Those lucky enough to have read through it confirm its nonsensical nature.

Did you know?

Satire: Veritas was one of two palindromic novels put out in limited editions during the 1980s.

  1. Dr Awkward & Olson in Oslo

Length: 31,954 words, 104,000 characters
Author: Lawrence Levine
Type: Novel
Subject Matter: Long, challenging palindromes

10 Longest Known Palindromes - Largest.org (10) Source: wikimedia.org

The novel Dr Awkward & Olson in Oslo by Lawrence Levine is the longest documented palindrome. It was first put out in 1986, and it was written as a challenge. It’s around 200 pages long and is said to be one giant palindrome from start to finish! It is said to be more accessible than Satire: Veritas, despite also commonly being referred to as a “lost novel.”

Did you know?

The author of this novel, Lawrence Levine, lived in St. Augustine, Florida and wrote his first long palindrome in 1960 at 170 words and 600 characters long.

10 Longest Known Palindromes - Largest.org (2024)

FAQs

What is the longest palindrome in history? ›

The longest known palindromic word is saippuakivikauppias (19 letters), which is Finnish for a dealer in lye (caustic soda). A palindrome is a word or phrase where the letters read backwards, give the same word or phrase, eg: the phrase 'Madam I'm Adam', with the reply 'Eve'.

Which is the largest palindrome word? ›

According to Guinness World Records, the Finnish 19-letter word saippuakivikauppias (a soapstone vendor), is the world's longest palindromic word in everyday use.

What is the coolest palindrome? ›

  1. 1 A great bargain. A nut for a jar of tuna.
  2. 2 A permissive friend. Al lets Della call Ed “Stella.”
  3. 3 An Italian palindrome. Amore, Roma.
  4. 4 A long example. Are we not pure? ...
  5. 5 A moral dilemma. Borrow or rob?
  6. 6 Follow the words, not the letters. King, are you glad you are king?
  7. 7 A weird concept. Taco cat.
  8. 8 Bad eyesight.
May 16, 2019

What is the longest sentence that is spelled the same backwards? ›

Nevertheless, Mark Saltveit, editor of The Palindromist, was willing to declare it “the world's longest palindromic sentence,” or the longest parody of a favorite old chestnut: “A man, a plan, a canal—Panama!”

What is the hardest palindrome? ›

The longest palindrome in English is often considered tattarrattat, coined by James Joyce in his 1922 Ulysses to imitate the sound of a knock on the door. Try your hand at this list of some of the hardest words to spell.

What is the largest 3 digit palindrome number? ›

The three digit palindromes are 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202, 212, 222, . . . One could list all of the three digit palindromes to see how many there are, but a more general formula can be derived to find the number of k-digit palindromes, where k is any whole number greater than one.

Is 999 a palindrome number? ›

There are 90 palindromic numbers with three digits (Using the Rule of product: 9 choices for the first digit - which determines the third digit as well - multiplied by 10 choices for the second digit): {101, 111, 121, 131, 141, 151, 161, 171, 181, 191, …, 909, 919, 929, 939, 949, 959, 969, 979, 989, 999}

What is a rare palindrome? ›

February 22 2022 is a palindromic date as it reads the same forwards as it does backwards 22/2/22. In the US, the date 22 February 2022 is also a palindrome and is written as 2/22/22. It's a rare occurrence when dates are palindromic in the US and the UK due to the difference in how they're written.

What is a perfect palindrome? ›

Your typical palindrome (eg 12321) is a perfect palindrome; its perfectness is 1. To determine the perfectness of a string, you see how many sections you can split it into where each section is a palindrome.

What is the most delayed palindrome? ›

The most delayed palindromic number recorded for the 8 digit set is 10,309,988 which solves in only 95 iterations.

What is the shortest palindrome word? ›

blobolb

What is the most delayed palindrome number? ›

On 5 January 2021, Anton Stefanov computed two new Most Delayed Palindromic Numbers: 13968441660506503386020 and 13568441660506503386420 takes 289 iterations to reach the same 142 digit palindrome as the Rob van Nobelen number.

What is the 13955 word sentence? ›

The longest sentence award goes to: Jonathan Coe's The Rotter's Club, 13,955 word sentence.

What is the longest word with no duplicate letters? ›

The longest words with no repeated letters are dermatoglyphics and uncopyrightable. The longest word whose letters are in alphabetical order is the eight-letter Aegilops, a grass genus.

How do you spell pneumonoultramicroscopicsilicovolcanoconiosis backwards? ›

How do you say pneumonoultramicroscopicsilicovolcanoconiosis backwards? Sisoinoconaclovociliscipocsorcimartluonomuenp is pneumonoultramicroscopicsilicovolcanoconiosis spoken backwards.

What is the smallest 3 digit palindrome? ›

The number 101 is the smallest three-digit palindromic prime.

How many 7 letter palindromes are there? ›

Thus, there are 264 total palindromes of length 7.

What is the greatest between two such palindromic times? ›

b) The greatest length of time between two consecutive palindromes is from 10:01 to 11:11, a gap of 70 minutes. Extension: The greatest length of time between two consecutive such numbers using a 24-hour clock is 15:51 to 20:02, a gap of 4 hours and 11 minutes.

Is 1212 a palindrome? ›

However, the number 1212 is not a palindrome. This is because from left to right, it reads 1212 however from right to left, it reads 2121.

What is the greatest palindromic number less than 999? ›

The palindromes within 1000 are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, …, 989, 999.

Is 333 a palindromic number? ›

Examples. The numbers 66, 161, 1441 and 580 085 are palindromic numbers. With the digits 2 and 3, I can write 6 palindromic numbers with 2 or 3 digits: 22, 33, 222, 333, 232 and 323.

What is the next palindrome after 25952? ›

The next palindrome after 25952 is 26062, with a separation of 110.

Is 55555 a palindrome number? ›

3.12 (Palindromes) A palindrome is a number, word or text phrase that reads the same backwards or forwards. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611.

What is rare palindrome date? ›

Feb. 22, 2022 — or 2/22/22 — is a rare palindrome date, meaning it reads the same forwards and backwards.

Top Articles
Latest Posts
Article information

Author: Pres. Lawanda Wiegand

Last Updated:

Views: 6072

Rating: 4 / 5 (71 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Pres. Lawanda Wiegand

Birthday: 1993-01-10

Address: Suite 391 6963 Ullrich Shore, Bellefort, WI 01350-7893

Phone: +6806610432415

Job: Dynamic Manufacturing Assistant

Hobby: amateur radio, Taekwondo, Wood carving, Parkour, Skateboarding, Running, Rafting

Introduction: My name is Pres. Lawanda Wiegand, I am a inquisitive, helpful, glamorous, cheerful, open, clever, innocent person who loves writing and wants to share my knowledge and understanding with you.