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English definition of “must-have”

must-have

adjective [before noun]     /ˈmʌst.hæv/
A must-have object is something that many people want to own: The iPod quickly established itself as a must-have device.Liked, or not liked, by many people
(Definition of must-have adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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