hyperactive

adjective

ˌhī-pər-ˈak-tiv How to pronounce hyperactive (audio)
Definition of hyperactivenext
1
as in excited
being in a state of increased activity or agitation the skyrocketing price of oil resulted in a wildly fluctuating, hyperactive stock market

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms
2
as in excitable
easily excited by nature hyperactive children who are in dire need of a guardian with a firm hand

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of hyperactive Your Immune System May Become Balanced Vitamin D and zinc may also tamp down hyperactive immune responses that occur in autoimmune diseases (conditions in which the body attacks itself). — Megan Nunn, Verywell Health, 12 May 2026 But what should be a hyperactive, frenetic, and fractured mess instead has a curious, uncanny unity. — Reed Jackson, SPIN, 8 May 2026 After 24 hours at 4G, flies stayed hyperactive for weeks. — Aamir Khollam, Interesting Engineering, 1 May 2026 There’s interesting news coming from Sam Altman’s empire, a firm known for innovating as AI advances in hyperactive leaps and bounds. — John Werner, Forbes.com, 28 Apr. 2026 See All Example Sentences for hyperactive
Recent Examples of Synonyms for hyperactive
  1. excited
  2. excitable
  3. heated
  4. nervous
  5. agitated
  6. overactive
Adjective
  • Jihyo heard Shenseea on the demo for the song and was excited to contribute her voice alongside hers.
    — Laura Sirikul, Forbes.com, 11 July 2026
  • Down the road, Zufferey is excited about using this kind of robot for a range of applications, including monitoring harmful algal blooms, fish stocks, and coastal erosion.
    — Ari Daniel, NPR, 9 July 2026
Definition of excited
Adjective
  • The studio released the official trailer for the film on Thursday, showing Edgar-Jones as the formidable Elinor Dashwood; Esmé Creed-Miles as her excitable sister, Marianne; and Bodhi Rae Breathnach as their youngest sibling, Margaret.
    — Lily Ford, HollywoodReporter, 25 June 2026
  • The excitable kids had been instructed several times to give Bryce Young room.
    — Alex Zietlow, Charlotte Observer, 1 June 2026
Definition of excitable
Adjective
  • Expert stylist and salon owner Nunzio Saviano says the key to big ‘90s hair, sans a heated round brush, is working on partially damp hair.
    — Odeya Pinkus, InStyle, 8 July 2026
  • The case drew national attention because Metcalf was white and Anthony is Black, which drew heated debate on social media.
    — Suzanne Gamboa, NBC news, 7 July 2026
Definition of heated
Adjective
  • The looming project was why Purohit was nervous to move her mother into Silverado last winter.
    — Clara Harter, Los Angeles Times, 9 July 2026
  • For most of the last decade the threat argument was a transatlantic one, with a nervous eastern flank pulling against a distracted west.
    — Güney Yıldız, Forbes.com, 7 July 2026
Definition of nervous
Adjective
  • This friend has become a doomscroller and is very agitated with the political scene.
    — Judith Martin, Mercury News, 4 July 2026
  • People with heat stroke can feel confused, unable to speak properly and agitated.
    — Claire Cameron, Scientific American, 2 July 2026
Definition of agitated
Adjective
  • Thyroid dysfunction — whether overactive or underactive — also disrupts the hair growth cycle.
    — Ascend Agency, New York Daily News, 16 June 2026
  • Long-term use of medications like prednisone and conditions like overactive thyroid also raise risk in ways worth flagging with a doctor.
    — Allison Palmer Updated June 3, Sacbee.com, 3 June 2026
Definition of overactive

Browse Nearby Words

hyperacid
hyperactive
hyperacuity
See all Nearby Words

Cite this Entry

“Hyperactive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hyperactive. Accessed 12 Jul. 2026.

Copy Citation

More from Merriam-Webster on hyperactive

Nglish: Translation of hyperactive for Spanish Speakers

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of fulcrum

See Definitions and Examples »

Popular in Grammar & Usage

See More

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)
See More

Popular in Wordplay

See More

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

One-Word Oxymorons: Bittersweet, Spendthrift, and More

Ten Words Ending with a Silent ‘T’

The Words of the Week - Jul 10
See More

Popular

See More

Is that lie 'bald-faced' or 'bold-faced'?

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
banana-mirrored
Contradictory Words Quiz Pick out which word means one thing…and the opp...
See All