| offene Linie | open file |
| offene Menge | open set |
| offene Silbe | open syllable |
| halboffene Linie | half-open file |
| offene Frage | moot point |
| offene Spiele | Open Game |
| offenes Ende | cliffhanger |
| grüne Linie | green line |
| Offenes Mikro | open mic |
| offene Stelle | opening |
| offener Fonds | open-end fund |
| Offensive | offensive |
| offener Brief | open letter |
| offline | offline |
| öffentlich | public open |
| Affenente | freckled duck |
| ohne Liebe | loveless |
| freie Liebe | free love |
| rote Linie | red line |
| Frontlinie | front |