That makes me wonder if there are long palindromic words in other languages.
If we allow words in a sentence to form palindromes, we get some long ones;
Oozy rat in a sanitary zoo. Murder for a jar of red rum. Mr. Owl Ate My Metal Worm Napoleon Bonaparte: Able was I ere I saw Elba Are we not pure? “No, sir!” Panama’s moody Noriega brags. “It is garbage!” Irony dooms a man—a prisoner up to new era. The not so long but topical; Rise to vote, sir The maths problem; Never odd or even Then there's palindromic poetry; Doppelganger by James A. Lindon Entering the lonely house with my wife I saw him for the first time Peering furtively from behind a bush -- Blackness that moved, A shape amid the shadows, A momentary glimpse of gleaming eyes Revealed in the ragged moon. A closer look (he seemed to turn) might have Put him to flight forever -- I dared not (For reasons that I failed to understand), Though I knew I should act at once. I puzzled over it, hiding alone, Watching the woman as she neared the gate. He came, and I saw him crouching Night after night. Night after night He came, and I saw him crouching, Watching the woman as she neared the gate. I puzzled over it, hiding alone -- Though I knew I should act at once, For reasons that I failed to understand I dared not Put him to flight forever. A closer look (he seemed to turn) might have Revealed in the ragged moon. A momentary glimpse of gleaming eyes A shape amid the shadows, Blackness that moved. Peering furtively from behind a bush, I saw him for the first time, Entering the lonely house with my wife.