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

• in shape
• insheathe
• insheathed
• insheathes
• insheathing
• inshell
• inshelled
• inshelling
• inshells
• inshelter
• insheltered
• insheltering
• inshelters
• inship
• inshipped
• inshipping
• inships
• in shit
• inshore
• in short
• in short order
• in short supply
• inshrine
• in shtook
• inside