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

• betacarotene
• betacism
• betacisms
• beta decay
• beta decays
• Beta fibre
• betaine
• betaines
• beta interferon
• betake
• betaken
• betakes
• betaking
• beta particles
• beta rays
• beta rhythm
• beta rhythms
• betas
• beta test
• beta-test
• beta-tested
• beta-testing
• beta tests
• beta-tests
• beta-thalassaemia