Brio definition

brēō

noun

Vigor; vivacity.

noun

Animation; vivacity; zest.

noun

Origin of brio

Italian from Spanish brio or Provençal briu both of Celtic origin gwerə-¹ in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition
Italian brio (“finesse, talent”), from Old Provençal briu (“wild”), from Gaulish brīgos (compare Old Irish bríg (“pith, strength”), Welsh bri (“repute, respect”)).

From Wiktionary