Definition written by Yamina Saheb (external link), Co-Founder of the World Sufficiency Lab, found in COP26 "Sufficiency should be First" and included in the IPCC 2022 climate mitigation report (external link) and IPCC 2023 synthesis report (external link).
Sufficiency
is a set of policy measures and daily practices which avoid the demand for energy, materials, land, water, and other natural resources, while delivering wellbeing for all within planetary boundaries.