| streng geheim | top secret |
| Strengheit | sternness |
| streng genommen | actually strictly speaking |
| Gestrengigkeit | sternness |
| Strenge | austerity |
| Streitigkeit | conflict contention dispute |
| Stringtheorie | string theory |
| Seniorenheim | retirement home |
| Sprengwedel | aspergillum |
| Serengeti | Serengeti |
| stiften gehen | skedaddle |
| insgeheim | secretly |
| Pflegeheim | care home nursing home |
| Sieg Heil | Sieg Heil |
| Studentenheim | dormitory |
| Trondheim | Trondheim |
| Stratagem | stratagem |
| Strategem | stratagem |
| Streberin | wonk |
| Strebertum | pushiness |