Know why cattywampus was trending last week?
1520s, "act of pricking or stirring to action," from Latin stimulationem (nominative stimulatio), from stimulare "prick, goad, urge," from stimulus "spur, goad," from PIE *sti- "point, prick, pierce" (see stick (v.)).
stimulation stim·u·la·tion (stĭm'yə-lā'shən)
Arousal of the body or of individual organs or other parts to increased functional activity.
The condition of being stimulated.
The application of a stimulus to a responsive structure, such as a nerve or muscle, regardless of whether the strength of the stimulus is sufficient to produce excitation.
stimulate stim·u·late (stĭm'yə-lāt')
v. stim·u·lat·ed, stim·u·lat·ing, stim·u·lates
To arouse a body or a responsive structure to increased functional activity.