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

• humidify
• humidifying
• humidistat
• humidistats
• humidities
• humidity
• humidly
• humidness
• humidnesses
• humidor
• humidors
• humification
• humifications
• humified
• humifies
• humify
• humifying
• humiliant
• humiliate
• low-lived
• low lives
• low-loader
• low-loaders
• lowly
• Low Mass