doppelgänger /dopˈl-gengˈər/ or doppelganger /-gangˈ/

1. A ghostly double of a human person, an apparition
2. A wraith

• syrphid
• Syrphidae
• syrphids
• Syrphus
• syrtes
• syrtis
• syrup
• syruped
• syrupier
• syrupiest
• syruping
• syrups
• syrupy
• sys-
• sysop
• sysops
• syssarcoses
• syssarcosis
• syssitia
• syssitias
• systaltic
• system
• systematic
• systematical
• systematically