Expressionism is a style of art in which the intention is not to reproduce a subject accurately, but instead to portray it in such a way as to express the inner state of the artist.
The movement is associated with Germany in particular, and was influenced by such emotionally-charged styles as Symbolism, Fauvism, and Cubism. It is an extreme individualism.
Leading Expressionists included Wassily Kandinsky, George Grosz, Franz Marc and Edvard Munch. In the mid-20th century, Abstract Expressionism (in which there is no subject at all, only express the purport) was developed into an extremely influential style.
Expressionism Famous Painter
Expressionism Gallery Link