Focus on the pronunciation of duty-free
English definition of “duty-free”
noun (also duty free) TAX, COMMERCE
› [C] informal a duty-free shop: She works in the duty-free at Gatwick.
› [U or plural] goods that you can buy, for example, at an airport, without paying the tax that would normally be added to their price, or the system that allows these goods to be sold without tax: Since the abolition of duty free, airports can no longer rely on alcohol and tobacco for profits. I didn't have time to buy any duty-frees.