variants:
or hyper-excitable
Definition of hyperexcitable
: 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
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Merriam-Webster unabridged
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Time Traveler for hyperexcitable
The first known use of hyperexcitable was in 1870
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