1 [uncountable and countable] formal
a situation in which people behave violently in public:
There were disturbances in the crowd as fans left the stadium.
army training on controlling civil disturbance
2 [uncountable and countable]
something that interrupts what you are doing, or the act of making this happen:
We arrange the work so there's as little disturbance as possible.
a medical condition in which someone is mentally ill and does not behave normally:
a history of mental disturbance