hy·​per·​ex·​cit·​able ˌhī-pər-ik-ˈsī-tə-bəl How to pronounce hyperexcitable (audio)
variants or hyper-excitable
: extremely or excessively excitable
hyperexcitable children
Dr. Walters believes that for a nerve cell to become hyperexcitable when it or its neighbor has been injured makes evolutionary sense.Natalie Angier
hyperexcitability noun
or hyper-excitability
hyperexcitability of motor neurons
a medication that can cause hyperexcitability

Examples of hyperexcitable in a Sentence

Recent Examples on the Web The synesthesia is locked in, and the hyperexcitable visual cortex no longer drives it. Elizabeth Preston, Discover Magazine, 18 Nov. 2011

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hyperexcitable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of hyperexcitable was in 1870

Dictionary Entries Near hyperexcitable

Cite this Entry

“Hyperexcitable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperexcitable. Accessed 4 Oct. 2023.

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