| Synkretist | syncretist |
| synkretistisch | syncretistic |
| Synkretismus | syncretism |
| Senkreis | cutting |
| Sanskritist | Sanskritist |
| Synesis | constructio ad sensum |
| synergetisch | synergetic |
| syndetisch | syndetic |
| synthetisch | synthetic |
| Konkretion | concretion |
| Inkreis | incircle |
| senkrecht | vertical perpendicular |
| Sekretion | secretion |
| Separatist | separatist |
| Synergie | synergy |
| Synoptik | synoptic meteorology |
| Synthese | synthesis |
| asyndetisch | asyndetic |
| synoptisch | synoptic synoptical |
| syntaktisch | syntactic syntactical syntactically |