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

• autowinder
• autowinders
• autoxidation
• autoxidative
• autrefois acquit
• autre temps, autre moeurs
• autumn
• autumnal
• autumnally
• autumn crocus
• autumn crocuses
• autumns
• autumny
• autunite
• autunites
• auxanometer
• auxanometers
• aux armes
• auxeses
• auxesis
• auxetic
• auxetics
• auxiliar
• auxiliaries
• auxiliars