disturbance
noun
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”
Synonymsperturbationan unhappy and worried mental state
“there was too much anger and disturbance”
“she didn't realize the upset she caused me”
a disorderly outburst or tumult
“they were amazed by the furious disturbance they had caused”
a noisy fight
the act of disturbing something or someone; setting something in motion
(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness
electrical or acoustic activity that can disturb communication
Source: WordNet 3.1, Princeton University
