The word "sennight" functions as an archaic term denoting a period of seven nights—in other words, a week—and is employed to convey specific intervals or to enrich the narrative with an old-world cadence. Authors use it both procedurally, as when characters set appointments or indicate the passage of time (as in, for instance, a meeting on "Monday sennight" [1] or an event occurring "a sennight from now" [2, 3]), and poetically, lending rhythm and period authenticity to dialogue or verse (for example, when contrasting it implicitly with the modern "week" [4] or marking a fixed duration [5, 6]). In this way, "sennight" not only marks a precise temporal span but also deepens the historical and stylistic texture of the narrative.