overactive

adjective over·ac·tive \ ˌō-vər-ˈak-tiv \

Definition of overactive

:excessively or abnormally active
  • overactive glands
  • an overactive imagination

overactivity

play \ˌō-vər-ak-ˈti-və-tē\ noun

Examples of overactive in a Sentence

  1. She has an overactive bladder.

  2. His crazy ideas are products of an overactive imagination.

Recent Examples of overactive from the Web

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.

First Known Use of overactive

1647


OVERACTIVE Defined for English Language Learners

overactive

adjective

Definition of overactive for English Language Learners

  • : too active especially in a way that produces a bad result


Medical Dictionary

overactive

adjective over·ac·tive \ ˌō-və-ˈrak-tiv \

medical Definition of overactive

:excessively or abnormally active
  • an overactive mind
  • overactive glands

overactivity

play \-ˌrak-ˈtiv-ət-ē\ noun plural overactivities


Seen and Heard

What made you want to look up overactive? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

marked by intense feeling

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!