| Interlingue | ile-000 |
| penosi | |
| English | eng-000 | arduous |
| English | eng-000 | difficult |
| English | eng-000 | hard |
| English | eng-000 | irksome |
| English | eng-000 | laborious |
| English | eng-000 | toilsome |
| English | eng-000 | troublesome |
| Interlingue | ile-000 | desfacil |
| Interlingue | ile-000 | dur |
| Interlingue | ile-000 | fatigant |
| Interlingue | ile-000 | firm |
| Interlingue | ile-000 | fort |
| Interlingue | ile-000 | laborosi |
| Interlingue | ile-000 | solid |
| Interlingue | ile-000 | tedant |