What is the longest palindrome?

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โˆ™ 2015-12-05 00:15:22

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While there are many computer-generated thousand-word palindromes, almost none make consistent sense. In the Finnish language, there is a 25-letter single-word palindrome, saippuakuppinippukauppias which means "soap cup dealer". Officially, the longest palindrome is the 19-letter "saippuakivikauppias", which means a person who sells soapstones. "Tattarrattat" would be the longest single-word palindrome in the English language, but it appears in few dictionaries. It is an onomatopoeic nonce word describing the sound of someone knocking on a door, coined by James Joyce in the novel "Ulysses" (1922). It is considered secondary to the similarly used "rat-a-tat-tat".

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Dennis, Nell, Edna, Leon, Nedra, Anita, Rolf, Nora, Alice, Carol, Leo, Jane, Reed, Dena, Dale, Basil, Rae, Penny, Lana, Dave, Denny, Lena, Ida, Bernadette, Ben, Ray, Lila, Nina, Jo, Ira, Mara, Sara, Mario, Jan, Ina, Lily, Arne, Bette, Dan, Reba, Diane, Lynn, Ed, Eva, Dana, Lynne, Pearl, Isabel, Ada, Ned, Dee, Rena, Joel, Lora, Cecil, Aaron, Flora, Tina, Arden, Noel, and Ellen sinned.

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Q: What is the longest palindrome?
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