| Novial | nov-000 |
| idee | |
| Lingwa de Planeta | art-287 | idea |
| Sambahsa-mundialect | art-288 | idee |
| Deutsch | deu-000 | Idee |
| English | eng-000 | concept |
| English | eng-000 | idea |
| Esperanto | epo-000 | ideo |
| Esperanto | epo-000 | koncepto |
| Nederlands | nld-000 | concept |
| Nederlands | nld-000 | gedachte |
| Nederlands | nld-000 | idee |
| русский | rus-000 | идея |