Words from
hatch
conspire to devise (a plot or plan).
Source: My old website
ponder
think about (something) carefully, especially before making a decision or reaching a conclusion.
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mischievous
(of a person, animal, or their behavior) causing or showing a fondness for causing trouble in a playful way.
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intrusive
making an unwelcome manifestation with disruptive or adverse effect.
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impetus
the force that makes something happen or happen more quickly.
Source: My old website