| Morbus | disease |
| morbid | morbid |
| moros | morose sullen |
| O-Bus | trolley bus |
| Morion | morion |
| Mormon | Mormon |
| Morna | morna |
| moribund | moribund |
| Moral | morality morale |
| Morast | morass bog |
| Mord | murder homicide slaying |
| Morgen | morning good morning tomorrow morrow |
| morgen | tomorrow |
| Moritz | Maurice Morris Seymour |
| Morph | morph |
| Morpheus | Morpheus |
| Moräne | moraine |
| Mörder | murderer killer assassin |
| Mörser | mortar |
| Mörtel | mortar |