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English to English noun
| 1 |
an unhappy and worried mental state |  | Example: there was too much anger and disturbance
she didn't realize the upset she caused me
source: wordnet30
| 2 |
(physics) a secondary influence on a system that causes it to deviate slightly | | source: wordnet30
| 3 |
activity that is a malfunction, intrusion, or interruption | | Example: the term `distress' connotes some degree of perturbation and emotional upset
he looked around for the source of the disturbance
there was a disturbance of neural function
source: wordnet30
| 4 |
a disposition that is confused or nervous and upset | | source: wordnet30
| 5 |
the act of causing disorder | | source: wordnet30
| 6 |
The act of perturbing, or the state of being perturbed; esp., agitation of mind. | | source: webster1913
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