Lettrism (French: Lettrisme) is a French avant-garde movement founded in Paris in November 1945 by the Romanian-born Isidore Isou with Gabriel Pomerand. Its roots lie in Dada and Surrealism, but it set out to rebuild every art from the ground up, beginning with the letter - a unit stripped of meaning and treated as pure sound and pure form. From lettrist poetry the movement branched into hypergraphics (dense, layered compositions of letters, signs, and images), sound poetry, painting, and cinema: Isou's Traité de bave et d'éternité scandalized Cannes in 1951. The Lettrists themselves prefer the spelling 'Letterism' in English. Kept active for decades by figures such as Maurice Lemaître, the movement persists, and its splinters - the Letterist International - fed into the Situationist International.
Une réunion du groupe lettriste en 1971 (café Le Lutèce, Paris). De g. à dr.: Isidore Isou, Dany Tayarda, Jean,-Louis Sarthou, Edouard BerreCC BY-SA 3.0 (credit: Jean-Louis Bertran) · source
Defining characteristics
Letters, syllables, and punctuation freed from meaning and used as pure visual and vocal material
Hypergraphics (metagraphy): dense overlays of letters, signs, drawings, and color across the picture plane
Sound poetry built from cries, breaths, and noise rather than words
Cinema as manifesto: scratched, painted, or blank images with sound deliberately at odds with the picture
Typography composed for visual rhythm rather than reading
Key figures
Isidore Isou(1925-2007) — Romanian-born founder of the movement; poet, filmmaker, and chief theorist
Gabriel Pomerand(1926-1972) — Co-founder of the movement with Isou in Paris in 1945
Maurice Lemaître(1926-2018) — Painter, filmmaker, and writer; leading practitioner of hypergraphics