| Mus musculus | house mouse |
| Musikschule | conservatoire music school |
| muskulös | muscular |
| Cumulus | cumulus |
| Homunkulus | homunculus |
| Tumulus | tumulus |
| zum Schluss | in conclusion |
| Ausschluss | squeeze-out |
| Maskulismus | masculism |
| Russismus | Russianism |
| Kunstmuseum | art museum |
| Mesmerismus | mesmerism |
| Miesmuschel | mussel |
| Muralismus | muralism |
| Museumsstück | museum object |
| Musical | musical |
| Musikstück | piece of music composition |
| Musikus | musican |
| Muskatnuss | nutmeg |
| Muskeltonus | muscle tone |