impulsive

[im-puhl-siv]
adjective
1.
actuated or swayed by emotional or involuntary impulses: an impulsive child.
2.
having the power or effect of impelling; characterized by impulsion: impulsive forces.
3.
inciting to action: the impulsive effects of a revolutionary idea.
4.
Mechanics. (of forces) acting momentarily; not continuous.

Origin:
1375–1425 for an earlier sense; 1545–55 for current senses; late Middle English impulsif < Medieval Latin impulsīvus. See impulse, -ive

impulsively, adverb
impulsiveness, impulsivity, noun
nonimpulsive, adjective
nonimpulsively, adverb
nonimpulsiveness, noun
unimpulsive, adjective
unimpulsively, adverb

compulsive, impulsive, impetuous (see synonym study at impetuous).


1. rash, quick, hasty. See impetuous.
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World English Dictionary
impulsive (ɪmˈpʌlsɪv)
 
adj
1.  characterized by actions based on sudden desires, whims, or inclinations rather than careful thought: an impulsive man
2.  based on emotional impulses or whims; spontaneous: an impulsive kiss
3.  forceful, inciting, or impelling
4.  (of physical forces) acting for a short time; not continuous
5.  (of a sound) brief, loud, and having a wide frequency range
 
im'pulsively
 
adv
 
im'pulsiveness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

impulsive
1550s, "having the property of impelling," originally in reference to medicines that reduce swelling or tumors, from M.L. impulsivus, from L. impuls-, pp. stem of impellere (see impel). Of persons, "rash, characterized by impulses," from 1847.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

impulsive im·pul·sive (ĭm-pŭl'sĭv)
adj.

  1. Inclined or tending to act on impulse rather than thought.

  2. Motivated by or resulting from impulse.


im·pul'sive·ness or im'pul·siv'i·ty n.
The American Heritage® Stedman's Medical Dictionary
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Example sentences
The group was a mix of those who had tested high and those who had tested low on impulsivity.
Medications may be needed to control behavior problems caused by a loss of judgement, increased impulsivity, and confusion.
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