trigger - definition and synonyms

verb [transitive] 

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present tense
present participletriggering
past tensetriggered
past participletriggered
present tense
I/you/we/theytrigger off

or trigger off 

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  1. 1
    to make something happen

    The news of his death triggered more violence.

    1. a.
      to cause someone to have a particular feeling or memory

      You find that strangely familiar smells trigger memories of childhood.

    2. b.
      to cause someone to do or say something
      trigger a response/reaction:

      The report has triggered a fierce response from the governor.