Main entry: disruption, perturbation
Definition: the act of causing disorder
Main entry: fluster, perturbation
Definition: a disposition that is confused or nervous and upset
Main entry: perturbation, disturbance
Definition: activity that is a malfunction, intrusion, or interruption
Usage: the term `distress' connotes some degree of perturbation and emotional upset; he looked around for the source of the disturbance; there was a disturbance of neural function
Main entry: perturbation
Definition: (physics) a secondary influence on a system that causes it to deviate slightly
Main entry: perturbation, upset, disturbance
Definition: an unhappy and worried mental state
Usage: there was too much anger and disturbance; she didn't realize the upset she caused me