| Syllepsis | syllepsis |
| Syllepse | syllepsis |
| Prolepsis | prolepsis |
| Sepsis | sepsis |
| Skepsis | skepticism |
| Synesis | constructio ad sensum |
| Syllabus | syllabus |
| Sellerie | celery |
| Epilepsie | epilepsy grand mal |
| Asepsis | asepsis |
| Dyspepsie | dyspepsia indigestion |
| Solipsist | solipsist |
| Sylvia | Silvia |
| Sylvin | sylvite |
| Sylvio | Silvius |
| Syllogismus | syllogism |
| Sylphe | sylph |
| Sylphide | sylphid |
| Phyllis | Phyllis |
| Belletrist | belletrist |