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.
    
    Source: My old website
    
    mischievous
    (of a person, animal, or their behavior) causing or showing a fondness for causing trouble in a playful way.
    
    Source: My old website
    
    intrusive
    making an unwelcome manifestation with disruptive or adverse effect.
    
    Source: My old website
    
    impetus
    the force that makes something happen or happen more quickly.
    
    Source: My old website