Definition of switched-on in English:

switched-on

Line breaks: switched-on

Entry from British & World English dictionary

adjective

British informal
Aware of what is going on or what is up to date: your shortcomings will be apparent to a switched-on youngster

Definition of switched-on in:

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Pronunciation: fləˈdʒɪʃəs
adjective
(of a person or their actions) criminal; villainous