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Abstract: Faced with the urgency of climate change, Climate Engineering has been framed as a fast and feasible technological solution. At the same time, however, critique against it is getting increasingly louder. This paper articulates a critical analysis of Climate Engineering technologies from a point of view situated within the degrowth discourse. In the first part two approaches discussed within the degrowth debate are presented: the concept of viability based on a biophysical perspective and the concept of conviviality based on a socio-cultural approach. In a second step formalized arguments from the point of view of applied ethics are articulated and applied to three Climate Engineering Technologies: Sulfate Aerosol Injection, Bio-energy with Carbon Capture and Storage, and Afforestation. In a third step, an extended version of the trade-off argument about mitigation versus Climate Engineering solution is discussed from a degrowth perspective: accordingly, within the current dominant growth paradigm, climate engineering technologies might lead to reduced mitigation efforts. The paper follows the argumentative turn in applied ethics and displays a formalization of arguments that can help clarify decision-making and identify the different dimensions at stake. The paper articulates arguments against the deployment of CE technologies and advances a new version of the trade-off-argument based on a degrowth perspective. From the point of view of a degrowth-based critique of technology, the only type of Climate Engineering Technology ethically acceptable would be afforestation under specific conditions.