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English definition of “observant”

observant

adjective     /əbˈzɜː.vənt/ US  /-ˈzɝː-/ approving
C2 good or quick at noticing things: "That's a new dress , isn't it?" "Yes, you are observant!"PerceptiveUsing the eyesIntelligence
(Definition of observant adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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