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

• thallous
• thallus
• thalluses
• thalweg
• thalwegs
• Thammuz
• than
• thana
• thanadar
• thanadars
• thanage
• thanages
• thanah
• thanas
• thanat-
• thanatism
• thanatisms
• thanatist
• thanatists
• thanato-
• thanatognomonic
• thanatographies
• thanatography
• thanatoid
• thanatologies