I. ˌfyu̇rēˈō(ˌ)sō, fyu̇rˈyō- noun
( -s )
Etymology: Italian, from furioso, adjective
: a furious or insane man : fanatic
II. adjective (or adverb)
Etymology: Italian, from Latin furiosus
: with great force or vigor — used chiefly as a direction in music