| Interlingue | ile-000 |
| persistent | |
| English | eng-000 | inveterate |
| English | eng-000 | pertinacious |
| English | eng-000 | pushing |
| Interlingue | ile-000 | cronic |
| Interlingue | ile-000 | energic |
| Interlingue | ile-000 | habitual |
| Interlingue | ile-000 | inradicat |
| Interlingue | ile-000 | pertinaci |