spiffy/ʹspifi/ adj (spiffier, spiffiest)

• superstar
• superstate
• superstition
• superstore
• superstratum
• superstring
• superstructure
• supersymmetry
• supertanker
• supertax
• supertonic
• supervene
• supervise
• supervision
• superweed
• superwoman
• supinate
• supinator
• supine
• supper
• supplant
• supple
• supplejack
• supplement
• supplemental