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viable

American  
[vahy-uh-buhl] / ˈvaɪ ə bəl /

adjective

  1. capable of living.

  2. Physiology.

    1. physically fitted to live.

    2. (of a fetus) having reached such a stage of development as to be capable of living, under normal conditions, outside the uterus.

  3. Botany. able to live and grow.

  4. vivid; real; stimulating, as to the intellect, imagination, or senses.

    a period of history that few teachers can make viable for students.

  5. practicable; workable.

    a viable alternative.

    Synonyms:
    adaptable, usable, feasible, practical
  6. having the ability to grow, expand, develop, etc..

    a new and viable country.


viable British  
/ ˈvaɪəbəl /

adjective

  1. capable of becoming actual, useful, etc; practicable

    a viable proposition

  2. (of seeds, eggs, etc) capable of normal growth and development

  3. (of a fetus) having reached a stage of development at which further development can occur independently of the mother

"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

Other Word Forms

Derived Forms

Etymology

Origin of viable

First recorded in 1820–30; from French, from vi(e) “life” (from Latin vīta; see vital) + -able -able

Explanation

When something is viable, it has the ability to grow or function properly. A viable seed can develop into a plant, while a viable company has the resources to succeed. The adjective viable refers to something able to function properly and even grow. It is made up of the Latin root vita, which means "life," and the ending -able, which means "to be possible." In terms of science or botany, when a plant is viable it can live and flourish in an environment such as a cactus in the desert. Consider also the Wright brothers, who were the first to develop a viable airplane after many tries and spectacular failures.

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Vocabulary lists containing viable

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.

Increasing the efficiency of thermal radiation transfer could help make these technologies more viable.

From Science Daily • Jun. 8, 2026

Moreover, the follow-ups indicated to Disney that other Pixar franchises could be a viable revenue stream, no matter the public’s response to the films.

From Salon • Jun. 6, 2026

Video Games Europe, which represents many of the industry's largest publishers, said shutting down online services "must be an option" when games are no longer commercially viable.

From BBC • Jun. 6, 2026

“The question is whether it’s commercially viable and/or attractive compared to terrestrial compute,” he added, highlighting that hardware maintenance and launch costs could pose challenges.

From MarketWatch • Jun. 6, 2026

There's still no water to make it viable, but I have some ideas.

From "The Martian" by Andy Weir

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