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English definition of “switched on”

switched on

adjective     /ˌswɪtʃtˈɒn/ US  /-ˈɑːn/ old-fashioned informal
quick to know about or be involved with the most recent fashions and ideas Modern and fashionableFashionModern and fashionable
(Definition of switched on adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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