The ‘Theatre of the Absurd’, the popular label for Samuel Beckett’s theatre, has been challenged over the past decades before its implications were fully explored. This article reconsiders the ‘absurd’ with respect to Beckett and the human/nonhuman relations in the Anthropocene. It draws upon affect theory and posthumanism, arguing that the absurd in Beckett’s theatre takes root in the theatricalization of posthuman affects, which connect the human body and the non-human world. Posthuman affects subvert human sovereignty and disintegrate humans into nothingness. Yet they also give birth to a different cosmic ontology, which involves a call for change in the relationship between the human and the nonhuman. Revisited from the perspective of posthuman affect, the absurd in Beckett’s theatre acquires new complexities that bring glimmering possibilities of endurance and comfort in the face of catastrophe. Chen Chang is an assistant researcher of the English Department at Nanjing University, where she recently completed her PhD dissertation on Beckett and the posthuman body. She has published several articles on Beckett as well as in gender studies.