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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.

“As most fiction, it is a composite, an amalgam of personal experience, research and my fertile, overactive imagination,” Raicek said.

From The Wall Street Journal • Apr. 16, 2026

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

She credits what her father jokes is “an overactive sense of justice” to her grandparents, who ran a corner store in Santa Ana in the 1940s.

From Los Angeles Times • Oct. 15, 2025

"And why were you wasting precious time listening to an overaged delivery boy with an overactive imagination when you should have been studying."

From "The Westing Game" by Ellen Raskin