| Interlingue | ile-000 |
| perfid | |
| English | eng-000 | designing |
| English | eng-000 | disloyal |
| English | eng-000 | faithless |
| English | eng-000 | false |
| English | eng-000 | insidious |
| English | eng-000 | perfidious |
| English | eng-000 | traitorous |
| English | eng-000 | treacherous |
| Interlingue | ile-000 | astut |
| Interlingue | ile-000 | fals |
| Interlingue | ile-000 | fictiv |
| Interlingue | ile-000 | insidiosi |
| Interlingue | ile-000 | trahitiv |
| Interlingue | ile-000 | ínfidel |
| русский | rus-000 | вероломный |