from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Physical or mental strength, energy, or force.
  • n. The capacity for natural growth and survival, as of plants or animals.
  • n. Strong feeling; enthusiasm or intensity.
  • n. Legal effectiveness or validity.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative spelling of vigour.

from the GNU version of the Collaborative International Dictionary of English

  • n. Active strength or force of body or mind; capacity for exertion, physically, intellectually, or morally; force; energy.
  • n. Strength or force in animal or vegetable nature or action.
  • n. Strength; efficacy; potency.
  • transitive v. To invigorate.

from The Century Dictionary and Cyclopedia

  • To invigorate.
  • n. Active strength or force of body; physical force; a flourishing physical condition; also, strength of mind; mental health and power; by extension, force of healthy growth in plants.
  • n. Strength or force in general; powerful or energetic action; energy; efficacy; potency.
  • n. Synonyms Health, haleness, soundness, robustness, bloom, thriftiness.
  • n. Might, power.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. forceful exertion
  • n. active strength of body or mind
  • n. an imaginative lively style (especially style of writing)


Middle English, from Old French, from Latin, from vigēre, to be lively.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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