Abstract: Degrowth is a concept-platform with multiple meanings, and is shaped by five sources of thought: ecological, bioeconomical, anthropological, democratic, and spiritual. The word appeared in the 1970s, and imposed itself beginning in 2002 owing to the convergence between the criticism of development and the anti-advertising movement, initially in France but later across the European continent, beginning with Latin regions. In radicalizing ecological criticism, it connected and gave increased focus to numerous emerging alternatives in the margins of civil society.