| Spektrum | spectrum |
| spektral | spectral |
| Spekulum | speculum |
| Plektrum | plectrum |
| Spektral- | spectral |
| Speedrun | speedrun |
| Spermium | spermatozoon |
| Rektum | rectum |
| Metrum | meter |
| Petrus | Peter |
| Neutrum | neuter |
| Zentrum | center centre |
| Dekorum | decorum |
| Serum | serum |
| Spediteur | hauler |
| aspektuell | aspectual |
| Aspekt | aspect |
| Speer | spear javelin |
| Spektakel | spectacle racket row rumpus |
| Sperma | sperm semen |