duty-freeˌduty-ˈfree adjectiveadjTAX duty-free goods can be bought without paying tax on them, for example at ports and airports when you are travelling abroadThe drop in air traffic is expected to cut into duty-free perfume sales.
the airport’s duty-free shop
—duty-free adverbadvAlthough the US had many high tariff rates in 1900, some 60% of imports came in duty-free.