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Inclined to act on impulse rather than thought.
(adjective)
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Motivated by or resulting from impulse: such impulsive acts as hugging strangers; impulsive generosity. See Synonyms at spontaneous.
(adjective)
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Having force or power to impel or incite; forceful.
(adjective)
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Physics Acting within brief time intervals. Used especially of a force.
(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.