Meaning of the word overactive in English

What does overactive mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

overactive

US /ˌoʊ.vɚˈæk.tɪv/
UK /ˌəʊ.vərˈæk.tɪv/

Adjective

(of part of the body) producing too much of a substance, or reacting too quickly:

Example:
With an overactive thyroid, metabolism speeds up.
Related Word: