surtax /sûrˈtaks/

1. An additional tax
2. Tax payable on incomes above a certain high level (term not in official use in this sense)

1. To tax additionally
2. To charge surtax

• butty-colliers
• butty-gang
• butty-gangs
• buttyman
• butut
• bututs
• but what
• butyl
• butyl alcohol
• butylene
• butylenes
• butyl rubber
• butyls
• butyraceous
• butyrate
• butyrates
• butyric
• butyric acid
• buvette
• buvettes
• buxom
• buxomer
• buxomest
• buxomness
• buxomnesses