German orthography
Compound words, including nouns, are written together, e.g. "Haustür" (Haus+Tür; house door), "Tischlampe" (Tisch+Lampe; table lamp), "Kaltwasserhahn" (Kalt+Wasser+Hahn; cold water tap/faucet). This can lead to long words: the longest word in regular use, "Rechtsschutzversicherungsgesellschaften" ("legal protection insurance companies"), consists of 39 letters; while the longest German word ever published ("Donaudampfschiffahrtselektrizitätenhauptbetriebswerkbauunterbeamtengesellschaft", "Association for subordinate officials of the head office management of the Danube steamboat electrical services") has 79 letters.
...ish (audio drama)
The Omniverbum is the mythical longest word in existence. According to records, no one who has found the Omniverbum, or its sentient affix "Ish", has lived to tell of it. Except one. Book found the Ish on an obscure world and accidentally brought back to the college as per his programming. But now it's escaped, and is out to cause havoc on the speech centers of the human brain unless The Doctor can stop it.