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English definition of “critical”

critical

adjective (IMPORTANT)    /ˈkrɪt.ɪ.kəl/ US  /ˈkrɪt̬-/
B2 of the greatest importance to the way things might happen : The president's support is critical (to this project ). a critical decision Very important or urgent
(Definition of critical adjective (IMPORTANT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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