spiffy/ʹspifi/ adj (spiffier, spiffiest)

• synarthrosis
• sync
• syncarpous
• synch
• synchro
• synchro-
• synchromesh
• synchronic
• synchronicity
• synchronise
• synchronism
• synchronize
• synchronized swimming
• synchronous
• synchronous motor
• synchrony
• synchrotron
• syncline
• syncopate
• syncopation
• syncope
• syncretise
• syncretism
• syncretize
• syncytium