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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:

The Observatory issued a "Very Hot Weather Warning" on Sunday, advising citizens to drink water and avoid vigorous outdoor physical activities.

From Barron's Aug. 9, 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

Interval training alternates between more vigorous periods of exercise and lower-intensity periods of active recovery.

From Science Daily Aug. 2, 2026

At age 71 she seems too young and vigorous to be playing a nursing-home resident—despite that precise age being specified in the text.

From The Wall Street Journal Jul. 23, 2026

I thought of his expressive face, handsome and vigorous.

From "Red Scarf Girl: A Memoir of the Cultural Revolution" by Ji-li Jiang

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