| unsystematisch | unsystematic |
| systematisch | systematic systematical |
| systemisch | systemic |
| unsympathisch | disagreeable unpleasant |
| Synsystematik | syntaxonomy |
| Systematik | systematics |
| synsemantisch | synsemantic |
| schematisch | schematic |
| asthmatisch | asthmatic |
| ungrammatisch | ungrammatical |
| enzymatisch | enzymatic enzymic |
| symptomatisch | symptomatic |
| syntagmatisch | syntagmatic |
| Nostratisch | Nostratic |
| antistatisch | antistatic |
| quasistatisch | quasistatic |
| antisemitisch | anti-Semitic |
| Unserdeutsch | Rabaul Creole German |
| unsterblich | immortal |
| hysterisch | hysterical hysteric |