Da ‧ da ‧ is ‧ m /ˈdɑːdɑː-ɪz ə m/ BrE AmE ( also Da‧da /ˈdɑːdɑː/) noun [uncountable]
a movement in European art and literature in the early 20th century, in which artists and writers aimed to shock people by deliberately ignoring accepted ideas and producing strange, unexpected images. Dadaism was the main influence on ↑ surrealism , which developed from Dadaism in the 1920s.