The word “sithe” appears in literature with a remarkable range of meanings and functions. In some instances it serves a temporal or causal purpose, effectively substituting for “since” or “because” to introduce a reason or condition, as noted by its formation from “sithence” ([1]) and usage in conditional expressions ([2], [3]). At other times it conveys tone or sentiment; phrases such as “with a deep sithe” capture a profound emotional or reflective quality in dialogue ([4], [5], [6], [7]). Additionally, “sithe” is employed literally to denote parts of objects or tools, as seen in references to a “sithe-handle” or agricultural implements ([8], [9]). The term even finds a place in proper names and mythic designations, evident in the historic attribution of St. Sithe’s church ([10]), underscoring its versatility within the literary tradition.