| Deutsch | deu-000 |
| Freidenkertum | |
| català | cat-000 | racionalisme |
| Cymraeg | cym-000 | rhesymoliaeth |
| Deutsch | deu-000 | Freisinn |
| English | eng-000 | free thought |
| English | eng-000 | freethinking |
| English | eng-000 | freethought |
| English | eng-000 | rationalism |
| Esperanto | epo-000 | raciismo |
| Esperanto | epo-000 | racionalismo |
| français | fra-000 | rationalisme |
| русский | rus-000 | вольнодумство |
| русский | rus-000 | свободомыслие |
| español | spa-000 | racionalismo |
| українська | ukr-000 | вільнодумство |