There is no consensus on the origin of the movement’s name; a common story is that the artist Richard Huelsenbeck slid a paper knife randomly into a dictionary, where it landed on “dada”, a French term for a hobby horse.[14] Others note it suggests the first words of a child, evoking a childishness and absurdity that appealed to the group. Still others speculate it might have been chosen to evoke a similar meaning (or no meaning at all) in any language, reflecting the movement’s internationalism.

— Wikipedia, Dada