Huckaby allegedly killing Sandra Cantu could have been an accident or an impulse.
I saw his legs buckle and his entire body flinch as he fought the impulse to flatten himself against the asphalt.
Another difference is that Lanza had no trouble taking his life as impulse translated from finger to trigger.
early 15c., "an act of impelling, a thrust, push," from Latin impulsus "a push against, pressure, shock," also "incitement, instigation, impulse," past participle of impellere (see impel). Meaning "stimulus in the mind arising from some state or feeling" first recorded 1640s.
impulse im·pulse (ĭm'pŭls')
A sudden pushing or driving force.
A sudden wish or urge that prompts an unpremeditated act or feeling; an abrupt inclination.
The electrochemical transmission of a signal along a nerve fiber that produces an excitatory or inhibitory response at a target tissue.