chunter /chunˈtər/ (informal)

1. To mutter
2. To grumble
3. To chatter unceasingly and meaninglessly

• progressiveness
• progressivenesses
• progressive rock
• progressives
• progressive whist
• progressivism
• progressivisms
• progressivist
• progressivists
• prog rock
• progs
• progymnasia
• progymnasien
• progymnasium
• progymnasiums
• pro hac vice
• prohibit
• prohibited
• prohibiter
• prohibiters
• prohibiting
• prohibition
• prohibitionary
• prohibitionism
• prohibitionisms