| Comer See | Lake Como |
| Römernase | aquiline nose |
| Pomeranze | bitter orange |
| homerisch | Homeric |
| oder so | or so |
| safer Sex | safe sex |
| Genfer See | Lake Geneva |
| Oberer See | Lake Superior |
| per se | per se |
| Onegasee | Onega |
| Bodensee | Lake Constance Lake of Constance |
| Nordsee | North Sea German Sea |
| Übersee | overseas |
| Comanche | Comanche |
| Comeback | comeback |
| Comedian | comedian |
| Common Sense | common sense |
| Compiler | compiler |
| Computer | computer |
| Domestike | domestic |