Definition of overactive
- overactive glands
- an overactive imagination
She has an overactive bladder.
His crazy ideas are products of an overactive imagination.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'overactive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
in a lather, keyed up;
: too active especially in a way that produces a bad result
What made you want to look up overactive? Please tell us where you read or heard it (including the quote, if possible).
to lower or disgrace the reputation of
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