| Interlingue | ile-000 |
| secret | |
| English | eng-000 | clandestine |
| English | eng-000 | close |
| English | eng-000 | covert |
| English | eng-000 | cryptic |
| English | eng-000 | furtive |
| English | eng-000 | occult |
| English | eng-000 | private |
| English | eng-000 | privy |
| English | eng-000 | secret |
| English | eng-000 | surreptitious |
| Interlingue | ile-000 | arcan |
| Interlingue | ile-000 | celat |
| Interlingue | ile-000 | covrit |
| Interlingue | ile-000 | enigmatic |
| Interlingue | ile-000 | furtiv |
| Interlingue | ile-000 | furtori |
| Interlingue | ile-000 | ocult |
| Interlingue | ile-000 | particular |
| Interlingue | ile-000 | privat |
| русский | rus-000 | секретный |