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

Signifying together, with

syn.

1. Synonym
2. Synthetic

• refreshening
• refreshens
• refresher
• refreshers
• refreshes
• refreshful
• refreshfully
• refreshing
• refreshingly
• refreshment
• refreshment-room
• pinnulated
• pinnule
• pinnules
• pinny
• pinnywinkle
• pinochle
• pinochles
• pinocle
• pinocles
• pinocytoses
• pinocytosis
• pinole
• pinoles
• pin one's faith on