adj
overactive
adj
1
More active than is normal or healthy.
"The doctor said his imagination was simply overactive."
"An overactive thyroid can cause rapid weight loss."
How to Use Overactive
Learner’s notesIn plain EnglishDoing too much, or working harder than it should.
Common pairings
overactive imagination
overactive thyroid
overactive bladder
Word Forms
more overactive comparative, most overactive superlative
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The doctor said his imagination was simply _____.
Etymology
From over- + active.