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English definition of “serious”

serious

adjective [before noun] (NEEDING ATTENTION)    /ˈsɪə.ri.əs/ US  /ˈsɪr.i-/
B2 needing or deserving your complete attention : That's an interesting job offer - I'd give it some serious consideration if I were you. We've got some serious talking to do, you and me.Very important or urgent
(Definition of serious adjective (NEEDING ATTENTION) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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