Derange
Part of speech: verb
Definition: to cause someone to go insane (usually used in the passive, see deranged) to cause disorder in something, to distort it from its ideal state to disrupt somebody's plans, to inconvenience someone
Perturb
Part of speech: verb
Definition: To disturb; to bother or unsettle.To slightly modify the motion of an object.To modify the motion of a body by exerting a gravitational force.To modify slightly, such as an equation or value.