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

Signifying together, with

syn.

1. Synonym
2. Synthetic

• classinesses
• classing
• class interval
• class intervals
• classis
• classism
• classisms
• classist
• classists
• class-leader
• class-leaders
• class legislation
• classless
• classlessness
• class list
• class lists
• classman
• classmate
• classmates
• classmen
• classroom
• classrooms
• class struggle
• class struggles
• class war