deviser

/dɪˈvaɪzər/
noun
  1. A person who creates, plans, or invents something, especially a method, system, or device.
    • The deviser of this board game spent years testing different rules.
    • She was the chief deviser of the escape plan that saved the hostages.
    • The deviser of the new recycling system won an award for environmental innovation.
Antonyms
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