prestissimo

adj

1. (not-comparable)Extremely fast, the fastest possible tempo.

adv

1. (not-comparable)Very quickly.

   “A delegation of Norman gentry boldly requesting in 1771 the calling of the Normandy estates (which had been abolished in 1666) was despatched prestissimo to the Bastille.”

noun

1. An extremely section of music.

   “The dance starts with a slow tempo, but the more the excitement rises the quicker becomes the tempo, until finally it becomes a whirling prestissimo.”