Longman Dictionary of Contemporary English homepage

vigorous

adjective
     
vig‧o‧rous
1 using a lot of energy and strength or determination:
Your dog needs at least 20 minutes of vigorous exercise every day.
Environmentalists have begun a vigorous campaign to oppose nuclear dumping in the area.
a vigorous debate
Vigorous efforts are being made to find a solution to the problem.
The measures provoked vigorous opposition in right-wing circles.
2 strong and healthy:
a vigorous young man
vigorously adverb

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