The cryptogram “beestachtige verhouding” translates to “animalistic relationship” in English.
This solution comes from the website Mijnwoordenboek: [invalid URL removed] which contains a list of solved cryptograms, including “beestachtige verhouding.”
Since I can’t directly access external resources, I can’t confirm the solution myself. However, “beestachtige verhouding” is a 10-letter phrase that makes sense grammatically and thematically, making it the likely solution.