An interruption or disruption that breaks the peace, calm, or normal functioning of something.
From Old French 'disturber,' combining 'dis-' (apart) and 'turbare' (to confuse), ultimately from Latin 'turbare' meaning to throw into disorder.
In physics, a 'disturbance' is literally how waves begin—a single disruption in water or air creates ripples that travel outward, which is why one person's disturbance at a concert can ripple through the entire crowd's experience.
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