| Senföl | mustard oil |
| Senfkohl | bok choy |
| Senf | mustard |
| Senior | senior citizen |
| senior | senior |
| Senkel | switchback aplomb |
| Sensor | sensor |
| senil | senile |
| Seneca | Seneca |
| Senker | plummet |
| Senklot | plummet |
| Sensei | sensei |
| Sen | sen |
| Senat | senate |
| Senator | senator |
| Sender | transmitter |
| Senegal | Sénégal River Senegal (Englisch) Senegal |
| Senfgas | mustard gas sulfur mustard |
| Senfglas | mustard jar |
| Senfkorn | mustard seed |