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primary

adjective (MAIN)
 
 
/ˈpraɪ.mə.ri/ US  /-mɚ.i/

Definition

B2 more important than anything else; main: The Red Cross's primary concern is to preserve and protect human life. The primary responsibility lies with those who break the law.Very important or urgent
(Definition of primary adjective (MAIN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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