Collins Concise English Dictionary © HarperCollins Publishers::
switch off vb (adverb)
  1. to cause (a device) to stop operating by or as if by moving a switch, knob, or lever; turn off
  2. informal to cease to interest or be interested; make or become bored, alienated, etc
WordReference Random House Unabridged Dictionary of American English © 2026
switch-off  (swichôf′, -of′),USA pronunciation n. 
  1. Electricitythe act or process of switching off a power supply, light source, appliance, etc.
  • noun, nominal use of verb, verbal phrase switch off

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