a. Strong and healthy; robust: "Her splendid, vigorous body lay still and relaxed under the loose folds of her clothing" (Willa Cather).
b. Growing or spreading rapidly: a vigorous vine.
2. Characterized by or done with force and energy: "With a vigorous shake to get rid of the brine in his hair, he ran into the woods to hunt small game" (John Muir). See Synonyms at active.
3. Forceful; effective: a model of vigorous prose.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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