| synaptische | synaptic |
| synoptisch | synoptic synoptical |
| syndetisch | syndetic |
| syntaktisch | syntactic syntactical syntactically |
| dynastisch | dynastic |
| Synapse | synapse |
| asyndetisch | asyndetic |
| synthetisch | synthetic |
| syntonisch | syntonic |
| dynamisch | dynamic |
| enkaptisch | encaptic |
| haptisch | haptic |
| septisch | septic |
| skeptisch | sceptical skeptical sceptic skeptic |
| sinitisch | Sinitic |
| fanatisch | fanatic |
| gymnastisch | gymnastic |
| monastisch | monastic monastical monastically |
| nautisch | nautical nautically navigational |
| semantisch | semantic semantically |