Taedium is a Latin word that refers to a feeling of boredom, weariness, or tedium. There are a variety of synonyms for this word, including ennui, monotony, drudgery, listlessness, and lethargy. Ennui refers to a feeling of dissatisfaction with life that often results in a lack of interest or enthusiasm. Monotony describes a lack of variety or diversity, while drudgery refers to tedious, boring, or difficult work. Listlessness and lethargy both suggest a lack of energy, enthusiasm, or motivation. Other synonyms for taedium include apathy, indifference, and languor, all of which reflect a sense of boredom or disinterest in everyday life.