| Nederlands | nld-000 |
| hardnekkigheid | |
| English | eng-000 | intractability |
| English | eng-000 | obstinacy |
| English | eng-000 | stubbornness |
| English | eng-000 | willfulness |
| Esperanto | epo-000 | obstino |
| français | fra-000 | acharnement |
| Nederlands | nld-000 | lastigheid |
| Nederlands | nld-000 | standvastigheid |
| русский | rus-000 | упорство |
| español | spa-000 | intratable |