Rising societal polarisations around health and climate crises have brought more attention to the close relations between social and environmental challenges. These polarisations triggered an interest in the participatory design (PD) field in developing approaches that enhance connections between diverse actors operating across societal and environmental sectors. However, the capabilities needed for these approaches have not been sufficiently articulated in PD research and education. To fill in this gap, we define ‘reworlding’ as an operation of self-critique within PD that engages with capabilities needed to reveal and articulate radical interdependencies between humans and more-than-humans, across social and environmental worlds, and within situated contexts. We propose both the redefinition of the design capabilities needed for (re)connecting these worlds (retracing, reconnecting, reimagining and reinstitutioning), as well as a reconsideration of learning environments where these capabilities can be tested and enhanced.