- sycosis o xycoxix
- sydenham o xydenham
- sydney o xydney
- sydow o xydow
- sylvatica o xylvatica
- sylvaticum o xylvaticum
- sylvester o xylvexter
- sylvestris o xylvextrix
- sylvia o xylvia
- sylvie o xylvie
- symantec o xymantec
- symbol o xymbol
- symphony o xymphony
- symposium o xympoxium
- syndicate o xyndicate
- syndrome o xyndrome
- synthesis o xynthexix
- syrah o xyrah
- sys o xyx
- system o xyxtem
- systems o xyxtemx