Mundanity refers to ordinary or boring things that lack excitement or interest. However, there are several synonyms that can be used in place of this word. One of them is banality, which refers to something that is unoriginal or commonplace. Another synonym for mundanity is tedium, which is the state of being monotonous or tedious. Monotony is yet another synonym, which refers to the lack of variety or interest. Lastly, we have dullness, which refers to something that is lacking in excitement or energy. All these synonyms can be used interchangeably depending on the context in which they are used.