10 Longest Known Palindromes

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

Rotavator  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

Malayalam  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

Detartrated  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

Tattarrattat  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

Saippuakivikauppias  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

A_man_a_plan_a_canal_Panama  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

Sir_I_demand_I_am_a_maid_named_Iris  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

Dammit_Im_Mad  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

Satire: Veritas   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

Dr_Awkward_&_Olson_in_Oslo  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.

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