Which word is most closely related to cleverness and creativity?

The word that is most closely related to cleverness and creativity is "ingenuity." Ingenuity refers to the quality of being inventive, resourceful, and clever, often in the context of solving problems or coming up with innovative ideas. It encapsulates the ability to think creatively and develop original solutions, which aligns perfectly with the concepts of cleverness and creativity.

The other options do not align with this theme. Monotony refers to a lack of variety and monotone boredom, which contrasts sharply with the ideas of cleverness and creativity. Integrity relates to the quality of being honest and having strong moral principles, which is unrelated to creative abilities. Moroseness refers to a gloomy or sullen disposition, which does not connect to cleverness or creativity either. Thus, ingenuity stands out as the most relevant term.