Tachisme (alternative spelling: Tachism, derived from the French word tache, stain) is a French style of abstract painting popular in the 1940s and 1950s. The term is said to have been first used with regards to the movement in 1951. It is often considered to be the European equivalent to abstract expressionism, although there are stylistic differences (American abstract expressionism tended to be more "aggressively raw" than tachisme). It was part of a larger postwar movement known as Art Informel (or Informel), which abandoned geometric abstraction in favour of a more intuitive form of expression, similar to action painting. Another name for Tachism is Abstraction lyrique (related to American Lyrical Abstraction). COBRA is also related to Tachisme, as is Japan's Gutai group.