What is "terribilita"

Terribilità Is an Italian word that Michelangelo's 16th century contemporaries used to define his works, especially in his sculptures, as in the figure of David or in Moses.

Pope Julius II was the first to label it uomo terribile. This terribilità, also references the neoplatonics of humanists such as Marsilio Ficino, who had known Miguel Ángel in his youth.