| Novial | nov-000 |
| serti | |
| Lingwa de Planeta | art-287 | serte |
| Lingwa de Planeta | art-287 | sigure |
| Lingwa de Planeta | art-287 | zaruu-ney |
| Sambahsa-mundialect | art-288 | wassic |
| Sambahsa-mundialect | art-288 | yakin |
| Deutsch | deu-000 | sicher |
| English | eng-000 | certain |
| English | eng-000 | sure |
| Esperanto | epo-000 | certa |
| Esperanto | epo-000 | nepra |
| Nederlands | nld-000 | zeker |
| русский | rus-000 | непременный |
| русский | rus-000 | уверенный |