Which word describes an overwhelming sense of sadness?

The term "sullen" aptly describes an overwhelming sense of sadness as it conveys a mood of gloominess and a sulky demeanor. When someone is described as sullen, it reflects a deep-seated melancholy or brooding, characterizing a person who may withdraw from the world due to feelings of sadness or disappointment. This word captures the essence of heavy emotions and a reluctance to engage with the outside world, aligning perfectly with the idea of overwhelming sadness.

The other choices convey positive or neutral emotions, distinctly separate from the heaviness implied by sullen. "Jubilant" and "ebullient" refer to feelings of joy and exuberance, while "elated" describes a state of being extremely happy, all of which conflict with the concept of overwhelming sadness.