1550s, "agitated;" 1610s, "vibrating" (especially "vibrating so as to produce sound," of a string, etc.), from Latin vibrantem (nominative vibrans) "swaying," present participle of vibrare "move to and fro" (from PIE root *weip- "to turn, vacillate, tremble ecstatically"). Meaning "vigorous, full of life" is first recorded 1860. Related: Vibrantly; vibrancy.
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}