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Synonyms

sluggish

American  
[sluhg-ish] / ˈslʌg ɪʃ /

adjective

  1. indisposed to action or exertion; lacking in energy; lazy; indolent.

    a sluggish disposition.

    Synonyms:
    slothful, slow
    Antonyms:
    active, quick
  2. not acting or working with full vigor, as bodily organs.

    a sluggish liver.

  3. slow to act or respond.

    a sluggish car engine.

  4. moving slowly, or having little motion, as a stream.

  5. slow, as motion.

  6. slack, as trade, business, or sales.


sluggish British  
/ ˈslʌɡɪʃ /

adjective

  1. lacking energy; inactive; slow-moving

  2. functioning at below normal rate or level

  3. exhibiting poor response to stimulation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See inactive.

Other Word Forms

Etymology

Origin of sluggish

First recorded in 1400–50, sluggish is from the late Middle English word slugissh. See slug 1, -ish 1

Explanation

When you are feeling draggy — positively slug-like — you are sluggish, or slow. If cookie sales are sluggish at your bake sale, you are selling very few treats. Just about anything can be sluggish. An old computer that takes forever to load a piece of software is sluggish, as is a car that can't quite make it up a big hill. And who isn't sluggish in the morning before the first cup of coffee?! Picture a slug moving its heavy little body across a basketball court... Still going? Yes. It will take that slug forever to get to the foul line at the sluggish pace it's moving.

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Vocabulary lists containing sluggish

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sluggish home-market demand also reduced BYD’s revenue by 12% to 150.23 billion yuan in the quarter.

From The Wall Street Journal • Apr. 28, 2026

Sluggish sales growth and shifting consumer habits are drawing more activist investors to packaged food companies and restaurants.

From Barron's • Mar. 10, 2026

Sluggish sales in January could also weigh on gross domestic product in the first quarter unless there is a big car-sales rebound in February and March.

From MarketWatch • Feb. 4, 2026

Sluggish growth has left European households paying the price, with living standards rising much more slowly on this side of the Atlantic, it found.

From BBC • Sep. 9, 2024

A steering wheel attached to a Sluggish yellow moving truck, Plummeting eastward.

From "Geeks: How Two Lost Boys Rode the Internet Out of Idaho" by Jon Katz

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