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

Signifying together, with

• complicacy
• complicant
• complicate
• complicated
• complicated fracture
• complicated fractures
• complicatedly
• complicates
• complicating
• complication
• complication of diseases
• complications
• come off it
• come-offs
• come off second best
• come off worst
• come on
• come-on
• come-ons
• come on stream
• come on strong
• come on the scene
• come on to
• come out
• come out in the wash