disturbance

noun

1. (countable, uncountable)The act of disturbing, being disturbed.
2. (countable, uncountable)Something that disturbs.

   “That guy causes a lot of trouble, you know, he’s such a disturbance.”

3. (countable, uncountable)A noisy commotion that causes a hubbub or interruption.
4. (countable, uncountable)An interruption of that which is normal or regular.

   “Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.”

   “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.”

5. (countable, uncountable)A serious mental imbalance or illness.