Terribilità

Terribilità, the modern Italian spelling, or terribiltà, as Michelangelo's 16th century contemporaries tended to spell it, is a quality ascribed to his art that provokes terror, awe, or a sense of the sublime in the viewer.

Pope Julius II was apparently the first to describe Michelangelo as a uomo terribile ("terror-inducing man"), apparently describing his difficult character as much as his art.

This terribilità also references the neoplatonics of humanists such as Marsilio Ficino, who had known Michelangelo in his youth.

[1] Michelangelo's friend and collaborator Sebastiano del Piombo reported in a letter to him of 15 October 1520 on a private audience with Pope Leo X.

After praising Michelangelo's work, the pope continued "But he is terribile, as you see; one cannot deal with him".