syn- /sin-/, sy- /si-/, syl- /sil-/, sym- /sim-/ or sys- /sis-/

Signifying together, with

syn.

1. Synonym
2. Synthetic

• extraneousness
• extraneousnesses
• extranet
• extranets
• extranuclear
• extraordinaire
• extraordinaries
• extraordinarily
• extraordinariness
• extraordinary
• extraordinary ray
• extraordinary rays
• extraordinary rendition
• extra-parochial
• extra-physical
• extrapolate
• extrapolated
• extrapolates
• extrapolating
• extrapolation
• extrapolations
• extrapolative
• extrapolator
• extrapolators
• extrapolatory