Definition of 'turn on'

Verb

1. cause to operate by flipping a switch; "switch on the light"; "turn on the stereo"
      Synonyms: switch on
      Antonyms: switch off cut turn off turn out
2. be contingent on; "The outcomes rides on the results of the election"; "Your grade will depends on your homework"
      Synonyms: depend on devolve on depend upon ride hinge on hinge upon
3. produce suddenly or automatically; "Turn on the charm"; "turn on the waterworks"
4. become hostile towards; "The dog suddenly turned on the mailman"
5. cause to be agitated, excited, or roused; "The speaker charged up the crowd with his inflammatory remarks"
      Synonyms: agitate rouse charge commove excite charge up
      Antonyms: calm calm down quiet tranquilize tranquillize tranquillise quieten lull still
6. stimulate sexually; "This movie usually arouses the male audience"
      Synonyms: arouse sex excite wind up
7. get high, stoned, or drugged; "He trips every weekend"
      Synonyms: trip trip out get off

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