Tachism

French  Tachisme  (from tache, “spot”), style of painting practiced in Paris after World War II and through the 1950s that, like its American equivalent, Action painting, featured the intuitive, spontaneous gesture of the artist's brushstroke. Developed by the young painters Hans Hartung, Gérard Schneider, Pierre Soulages, Frans Wols, Chao Wu-chi (Zao Wu-ki), and Georges Mathieu, Tachism was part