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[im-puhl-siv] /ɪmˈpʌl sɪv/

actuated or swayed by emotional or involuntary :
an impulsive child.
having the power or effect of ; characterized by :
impulsive forces.
inciting to action:
the impulsive effects of a revolutionary idea.
Mechanics. (of forces) acting momentarily; not continuous.
characterized by actions based on sudden desires, whims, or inclinations rather than careful thought: an impulsive man
based on emotional impulses or whims; spontaneous: an impulsive kiss
forceful, inciting, or impelling
(of physical forces) acting for a short time; not continuous
(of a sound) brief, loud, and having a wide frequency range

1650s; see impulsive + -ness.

early 15c., originally in reference to medicine that reduces swelling or humors, from Middle French impulsif or directly from Medieval Latin impulsivus, from Latin impuls-, past participle stem of impellere (see impel). Of persons, “rash, characterized by impulses,” from 1847.

impulsive im·pul·sive (ĭm-pŭl’sĭv)

im·pul’sive·ness or im’pul·siv’i·ty n.


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