Synonyms of perturbation

1. disturbance, perturbation, upset, agitation: usage: an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me"
2. perturbation, influence: usage: (physics) a secondary influence on a system that causes it to deviate slightly
3. perturbation, disturbance, activity: usage: activity that is a malfunction, intrusion, or interruption; "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"
4. perturbation, fluster, discomposure: usage: a disposition that is confused or nervous and upset
5. disruption, perturbation, disturbance: usage: the act of causing disorder