switched-on

listen to the pronunciation of switched-on
English - English
If you describe someone as switched-on, you mean that they are aware of the latest developments in a particular area or activity. I am very impressed with Brian Hanlon, who seems a switched-on sort of guy. quick to notice new ideas and fashions
switch on
to change one's expression or appearance as if by turning a switch
switch on
to turn a switch to the "on" position in order to start or enable a device
switch on
If you switch on a light or other electrical device, you make it start working by operating a switch. She emptied both their mugs and switched on the electric kettle He pointed the light at his feet and tried to switch it on. = turn on
switch on
cause to operate by flipping a switch; "switch on the light"; "turn on the stereo
switch on
{f} turn on (the light, television, etc.)
switch on
cause to operate by flipping a switch; "switch on the light"; "turn on the stereo"
switched on
on, operational, turned on (as of an electrical switch)
switched-on

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    ... GPS, and so on--, can be switched on without your knowledge, and the data can be cached ...
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