noun
directional taboo avoidance; Heian-period travel custom
Archaic term for a Heian-period practice: departing the night before a planned journey, traveling in a different direction to avoid an unlucky direction, staying overnight, and then proceeding to the actual destination the next morning. Related to 方塞がり (katatagari), the unlucky directional taboo itself.
平安時代には、方違えをしてから旅立つことがよくあった。
During the Heian period, people often performed katatagae before setting out on a journey.