pentalogy /pen-talˈə-ji/

1. A pentad, esp of published works
2. A series of five related books

• soft-pedalled
• soft-pedalling
• soft pedals
• soft-pedals
• soft power
• soft powers
• soft radiation
• soft return
• soft returns
• soft rock
• soft-rock geology
• soft rocks
• soft roe
• soft rot
• soft rots
• softs
• soft sawder
• soft-sawder
• soft sawders
• soft science
• soft sculpture
• soft-sectored
• soft-sectoring
• soft sell
• soft-sell