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Verb: spark off
  1. Put in motion, initiate (a device, reaction, circuit, etc)
    "spark off the circuits";
    - trip, actuate, trigger, activate, set off, spark, trigger off, touch off
     
  2. Cause to start, provoke or initiate (usually something negative or violent)
    "spark off a huge argument";
    - kick off [informal], touch off, spark, set off, trigger

Derived forms: sparked off, sparks off, sparking off

Type of: initiate, pioneer