Final answer:
In literature, the word 'rue the day' is a symbolic phrase that represents deep remorse or regret for a past event. It is often used to convey intense sorrow or guilt, as seen in 'The Hunger Games'.
Step-by-step explanation:
In literature, the word rue can signify regret or sorrow. When saying 'rue the day,' it means to feel deep remorse or regret for a past event. This phrase is often used symbolically to convey a sense of intense sorrow or guilt, as in the case of Katniss feeling responsible for Rue's death in 'The Hunger Games'.