What is the longest word in your language, and what does it mean in English?
I love the German word verbesserungsbedürftig, meaning in need of improvement. I'm not German, but thought this was a cracking word.
Not the longest ones but the first that came to mind:
In French, one of the longest words is "anticonstitutionnellement", which means unconstitutionally. It's long but not something you'd use in daily conversation.
For Japanese, it's trickier because the language doesn’t really form long standalone words like German does. But if we count kanji compounds, something like "超電磁砲" (ちょうでんじほう, chōdenjihō), meaning railgun, is a cool one. Of course, technical or bureaucratic terms can get way longer, but they’re more like phrases than words.