| Interlingue | ile-000 |
| stult | |
| English | eng-000 | absurd |
| English | eng-000 | addle-brained |
| English | eng-000 | anserine |
| English | eng-000 | daft |
| English | eng-000 | dense |
| English | eng-000 | dull |
| English | eng-000 | harebrained |
| English | eng-000 | silly |
| Interlingue | ile-000 | absurd |
| Interlingue | ile-000 | fatui |
| Interlingue | ile-000 | folli |
| Interlingue | ile-000 | idiotic |
| Interlingue | ile-000 | inept |
| Interlingue | ile-000 | stupid |
| Interlingue | ile-000 | ínept |