| Stammbaumtheorie | tree model |
| Staatstheorie | theory of the state |
| Abstammungstheorie | evolutionary theory |
| Grammatiktheorie | grammar |
| Stammbaumforscher | genealogist |
| Stammbaumforscherin | genealogist |
| Stammmutter | ancestor |
| Stammvater | ancestor |
| Stammbaum | genealogical tree family tree |
| Stimmbürgerin | electress |
| Systemtheorie | system theory |
| Dramentheorie | dramatic theory |
| Sprachtheorie | linguistic theory theory of language |
| Sprechakttheorie | speech act theory |
| Stringtheorie | string theory |
| Staatsamateurin | shamateur |
| Stammdaten | master data |
| Stammgästin | denizen |
| Stammlerin | stutterer |
| Statthalterin | stadtholder |