| Interlingue | ile-000 |
| severi | |
| English | eng-000 | grim |
| English | eng-000 | harsh |
| English | eng-000 | rigid |
| English | eng-000 | severe |
| English | eng-000 | stern |
| English | eng-000 | strict |
| English | eng-000 | stringent |
| Interlingue | ile-000 | aspri |
| Interlingue | ile-000 | austeri |
| Interlingue | ile-000 | brusqui |
| Interlingue | ile-000 | exact |
| Interlingue | ile-000 | rigorosi |
| Interlingue | ile-000 | strict |
| Interlingue | ile-000 | violent |
| Interlingue | ile-000 | ínflexibil |