This research paper explores the interplay between space and voice in some selected poems by Carol Ann Duffy. Though voice in Duffy’s poetry has been extensively examined before, it is the intertwinement between space and voice that is underread. Through the use of an array of poetic devices, Duffy creates a distinct type of space. This space intriguingly becomes a site for both absence and presence, allowing for a multiplicity of meanings to emerge. The inscrutable nature of the space discovered in the selected poems leads to uncertainty in fully comprehending and/or defining its implications; which is why it calls for being deconstructed in order to read the multi-layered meanings. This study makes use of Jacques Derrida’s concept of undecidability or the undecidable so that it can fathom the intersection between space and voice in Duffy’s poems. It connects this intriguing spatial configuration to agency and/or the lack of it.