switched-on

[swicht-on, -awn]
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British Dictionary definitions for switched-on

switched-on

adjective
  1. informal well-informed or aware of what is up to date
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012