| synästhetisch | synaesthetic |
| synthetisch | synthetic |
| anästhetisch | anesthetic |
| ästhetisch | aesthetic |
| synergetisch | synergetic |
| Synästhesie | synesthesia synaesthesia synæsthesia |
| syndetisch | syndetic |
| syntaktisch | syntactic syntactical syntactically |
| dynastisch | dynastic |
| asthenisch | asthenic |
| legasthenisch | dyslectic dyslexic |
| antithetisch | antithetical |
| hypothetisch | hypothetical hypothetic |
| pathetisch | declamatory elevated emotional emotive histrionic impassioned |
| systemisch | systemic |
| synaptische | synaptic |
| synsemantisch | synsemantic |
| asyndetisch | asyndetic |
| synkretistisch | syncretistic |
| synoptisch | synoptic synoptical |