disturbance UK /dɪˈstɜː.bəns/US /dɪˈstɜɹ.bəns/ noun5 •The act of disturbing, being disturbed. •A noisy commotion that causes a hubbub or interruption. •An interruption of that which is normal or regular.Blue No. 1 and yellow No. 6 may also be toxic to some human cells. And as little as 1 milligram of yellow dye No. 5 may cause irritability, restlessness and sleep disturbances for sensitive children. — 2025 •Something that disturbs.That guy causes a lot of trouble, you know, he’s such a disturbance. •A serious mental imbalance or illness. formsdisturbances