manipulator

/məˈnɪpjəˌleɪtər/
noun
  1. A person who controls or influences others in a clever, unfair, or dishonest way.
    • The boss was a skilled manipulator who made employees feel guilty for taking breaks.
    • She realized her friend was a manipulator who only called when she needed a favor.
    • In the story, the villain is a master manipulator who tricks everyone.
  2. A device or tool used to handle or control something, especially in machines or robotics.
    • The factory uses a manipulator to move heavy metal parts.
    • The robot's arm is a precise manipulator used in surgery.
    • The joystick acts as a manipulator for the drone's camera.
Antonyms
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