Which term is synonymous with lethargy?

The term synonymous with lethargy is "sluggish." Lethargy refers to a state of weariness, drowsiness, and a lack of energy or enthusiasm. When someone is described as sluggish, it means they are slow-moving or lack the energy to engage actively in tasks, which aligns perfectly with the concept of lethargy. This connection highlights a shared quality of reduced vitality and motivation to act, which is central to both terms.

In contrast, the other choices convey meanings that are at odds with lethargy. "Motivated" suggests a drive or enthusiasm to take action, while "energetic" indicates a high level of activity and vigor. "Animated" also refers to being full of life or excitement. Therefore, these words do not align with the sense of inactivity or torpor that is characteristic of lethargy.