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Definitions

overactive

[oh-ver-ak-tiv] / ˌoʊ vərˈæk tɪv /


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.

Koy, the son of a white father and Filipina mother, saw comedy as a way to channel an overactive personality and need to make people laugh into a career.

From Los Angeles Times • Mar. 5, 2026

"I'm a fierce perfectionist and there is an overactive, hugely self-critical voice in my head - my whole life is an exercise in trying to shake that," he says.

From BBC • Dec. 31, 2025

Additional work will also explore how disease-related declines in PIP2 remove this regulatory control, allowing Piezo1 to remain overactive and impair cerebral blood flow.

From Science Daily • Dec. 25, 2025

Researchers are probing the pill’s efficacy in patients with Type 2 inflammatory diseases, which are triggered by an overactive immune response.

From Barron's • Dec. 8, 2025

It occurs when an overactive immune system begins attacking the cells that create pigment, or color, in the skin.

From "How to Disappear Completely" by Ali Standish