| Interlingue | ile-000 |
| desfacil | |
| English | eng-000 | difficult |
| English | eng-000 | hard |
| English | eng-000 | tough |
| English | eng-000 | uphill |
| Interlingue | ile-000 | dur |
| Interlingue | ile-000 | firm |
| Interlingue | ile-000 | fort |
| Interlingue | ile-000 | penosi |
| Interlingue | ile-000 | solid |
| русский | rus-000 | трудный |