| offenes Geheimnis | open secret |
| Kunstgeheimnis | trade knowledge trade secret |
| offene Linie | open file |
| offenes Ende | cliffhanger |
| Staatsgeheimnis | state secret |
| Bankgeheimnis | bank secrecy bank secret |
| Beichtgeheimnis | Seal of Confession |
| Briefgeheimnis | secrecy of correspondence secrecy of letters |
| Offenes Mikro | open mic |
| offene Beziehung | open relationship |
| offene Menge | open set |
| offener Fonds | open-end fund |
| offener Kern | interior |
| freies Geleit | safe-conduct |
| streng geheim | top secret |
| Familiengeheimnis | family secret |
| Geheimnis | secret |
| Wahlgeheimnis | election secrecy secrecy of the ballot |
| Offenheit | candor |
| offen zeigen | flaunt |