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Perturbation
01
a disruption or disturbance of a normal state of mind or emotions
02
the act of causing disorder
03
a disposition that is confused or nervous and upset
04
activity that is a malfunction, intrusion, or interruption
05
(physics) a secondary influence on a system that causes it to deviate slightly
Example
Financial worries were a constant perturbation to their otherwise calm peace of mind.
Mood swings were a common perturbation that disrupted his mental well-being.
The looming deadline was a constant perturbation to her otherwise calm demeanor as she worked.
