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overactivity

American  
[oh-ver-ak-tiv-i-tee] / ˌoʊ vərˌækˈtɪv ɪ ti /

noun

  1. the state or quality of being overactive.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The mixture also reduced the abnormal overactivity of neurons in the amygdala.

From Science Daily • Dec. 4, 2025

Solitary shrinks the parts of the brain used for learning and memory while triggering overactivity in the parts of the brain that cause fear and anxiety.

From Washington Post • Mar. 10, 2023

More consistently in adults so far, she has also discovered a pattern of overactivity on the right side, suggesting it is an adaptive, late-occurring change.

From Scientific American • Aug. 9, 2021

They’ve also come to recognize its unique profile of immune system overactivity and have identified effective treatments.

From Science Magazine • Mar. 18, 2021

The inference was inevitable that the entire process was to be put down to an overactivity of the pituitary.

From The Glands Regulating Personality by Berman, Louis, M.D.