from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

  • noun 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.
  • noun Strength or force in general; powerful or energetic action; energy; efficacy; potency.
  • noun Synonyms Health, haleness, soundness, robustness, bloom, thriftiness.
  • noun Might, power.
  • To invigorate.

from the GNU version of the Collaborative International Dictionary of English.

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

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun American Alternative spelling of vigour.

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

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


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

[Middle English, from Old French, from Latin, from vigēre, to be lively; see weg- in Indo-European roots.]


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