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vigorous

American  
[vig-er-uhs] / ˈvɪg ər əs /

adjective

  1. full of or characterized by vigor.

    a vigorous effort.

    Antonyms:
    weak
  2. strong; active; robust.

    a vigorous youngster.

    Synonyms:
    healthy, sound, sturdy
    Antonyms:
    weak
  3. energetic; forceful: a vigorous personality.

    vigorous steps;

    a vigorous personality.

    Synonyms:
    powerful
    Antonyms:
    weak
  4. powerful in action or effect.

    vigorous law enforcement.

    Antonyms:
    weak
  5. growing well, as a plant.

    Antonyms:
    weak

vigorous British  
/ ˈvɪɡərəs /

adjective

  1. endowed with bodily or mental strength or vitality; robust

  2. displaying, involving, characterized by, or performed with vigour

    vigorous growth

"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 active.

Other Word Forms

Etymology

Origin of vigorous

First recorded in 1300–50; Middle English, from Old French, from Medieval Latin vigorōsus; see vigor, -ous

Explanation

Anything vigorous is done with force and energy. Vigorous exercise makes you sweat, and a vigorous denial makes someone else sweat. Vigorous is a description for something strong or enthusiastic. It comes from the French word vigour, meaning "liveliness, activity." An active, physically energetic person is vigorous, and mental activities can be vigorous too, when they require a lot of mental effort. A vigorous argument doesn’t have to include physical wrestling; it just might involve verbal sparring.

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Vocabulary lists containing vigorous

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.

See Examples For:

Planted in April, they look vigorous despite no automatic irrigation, as do other flowers such as daisy-like echinaceas from US prairies.

From Barron's Aug. 25, 2026

While half-hour runs and swims registered fine, it consistently failed to recognize short but vigorous 20-minute walks and my 40-minute, hilly bike commute to work.

From The Wall Street Journal Aug. 9, 2026

For example, a 20% reduction in the risk of cardiovascular events was associated with 370 minutes of moderate to vigorous exercise per week among those with the lowest fitness.

From Science Daily Aug. 8, 2026

On Tuesday, the S&P 500 flashed a vigorous breakout from a technical pattern known as a “flag” or a “wedge” — typically a bullish signal, according to Adam Turnquist, chief technical strategist at LPL Financial.

From MarketWatch Aug. 4, 2026

Weldon, once Bateson’s teacher at Cambridge, turned into his most vigorous opponent.

From "The Gene" by Siddhartha Mukherjee

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