| syn | sight |
| syn- | optic |
| syna | examine |
| synagoga | synagogue |
| synaps | synapse |
| Synaptic | Synaptic Package Manager |
| Synaptisk plasticitet | Synaptic plasticity |
| synas | stand out |
| synbar | clear |
| synbarligen | apparently |
| Synchronized Multimedia Integration Language | Synchronized Multimedia Integration Language |
| synd | regrettable |
| synda | do wrong |
| syndabock | scapegoat |
| Syndafallet | Fall of Man |
| syndaflod | deluge |
| Syndafloden | Deluge |
| Syndaktyli | Dactyly |
| syndare | culprit |
| synderska | sinner |
| syndfri | sinless |
| syndfull | sinful |
| syndig | wicked |
| syndikalism | syndicalism |
