If there is anything us Dutch people love more than cheese, tulips, and windmills, it's needlessly lumping words together into giant Frankenwords. All of these examples are actual proper Dutch words. I shit you not.
  1. Aansprakelijkheidswaardevaststellingsveranderingen
    Liability valuation changes
  2. Arbeidsongeschiktheidsverzekeringsmaatschappij
    Disability insurance company
  3. Ventieldopjesfabrikantenvereniging
    A club for manufacturers of air valve caps
  4. Kindercarnavalsoptochtvoorbereidingswerkzaamhedencomitéleden
    Children's carnaval parade preparation committee members
  5. Verjaardagskaartenontwerpersbijeenkomstorganisator
    Organizer of a gathering of people who design birthday cards
  6. Woordenboekredactievergaderingsruimtesleutel
    Key to the meeting room for editors of a dictionary
  7. Tandartsassistentenopleidingsinstituut
    Dental assistant training institute
  8. Meervoudigepersoonlijkheidsstoornis
    Multiple personality disorder (credit to @YamborghiniHigh for suggesting this one)
  9. Langetermijnplanningsregelementenboek
    Long term planning rulebook
  10. Chronischevermoeidheidssyndroombehandelingsmethode
    Chronic fatigue syndrome treatment method