This study focuses on the element of the spiritual, or the numinous, in the poetry of the contemporary Irish poet, Eiléan Ní Chuilleanáin, against the background of the debate on the fragmented subject of post-structuralism. Using as its starting point the ideas of theorists such as Emmanuel Levinas and Jacques Derrida in relation to the unspeakable other, the study shows how poetry can act as an instrument of power in giving voice to the existential experience of being. The study highlights the strong sense of the spiritual in the poetry of Ní Chuilleanáin, and traces how her poetry gives voice to the secret space beyond articulation, the poised moments of quietude and contemplation beyond language. In her painstaking and detailed observations of everyday phenomena and activities, Ní Chuilleanáin in her poetry captures the liminal, epiphanic moments of the everyday, transforming the ordinary into the extraordinary. Using a phenomenological and psychoanalytic approach, where focus is given to the interconnectedness of self and world and the bodily aspect of experience, the study demonstrates how language and being are united in an interactive fusion, as the speaking subject gives voice to both the existential and spiritual aspects of human experience