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Phrasal verb

switch on

phrasal verb
UK /ˈswɪtʃ ɒn/
US /ˈswɪtʃ ɑn/

Meanings

phrasal verb

To turn on a device, light, or system so it starts working.

switch on: To turn on a device, light, or system so it starts working.
phrasal verb

To suddenly become alert, focused, or aware of what is happening.

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Definition

To switch on means to turn on a device or system so it starts working.

To switch on means to make a machine, light, or system start operating by pressing a button or using a switch. It is commonly used for everyday technology like lights, computers, and appliances. It can also mean to suddenly become alert or start paying attention.

Examples

  • I switch on the kettle as soon as I get home.
  • Could you switch on the porch light for me?
  • He switched on his laptop and started the video call.
  • She switched on the radio while she cooked dinner.
  • They finally switched on and noticed the deadline was today.

Common mistake

Learners often confuse "switch on" with "turn up" and say "switch on the volume" instead of "turn up the volume."