also: アールブリュト
noun
art brut; outsider art
Refers to art created outside the boundaries of official culture, typically by self-taught or marginalized artists. The term is borrowed from French and used in Japanese art discourse.
from French
この美術館ではアール・ブリュットの展覧会が開かれている。
An exhibition of art brut is being held at this museum.
彼は
He is known as a collector of outsider art.