noun
                                                an unhappy and worried mental state
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - there was too much anger and disturbance
- she didn't realize the upset she caused me
 
                                                                                        
                                                noun
                                                (physics) a secondary influence on a system that causes it to deviate slightly
                                                
                                                                                             
                                                                                        
                                                noun
                                                activity that is a malfunction, intrusion, or interruption
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - 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
 
                                                                                        
                                                noun
                                                a disposition that is confused or nervous and upset
                                                                                                Synonyms
                                                
                                                
                                                                                             
                                                                                        
                                                noun
                                                the act of causing disorder
                                                                                                Synonyms