glum

Glum describes a specific kind of sadness that is quiet, heavy, and often visible on the face. It suggests a mood of silent disappointment or resignation rather than active grief or loud anger.

Unlike 'miserable', which can be intense and overwhelming, glumness feels more like a low-energy slump. There is often a sense of sullenness attached to it, where the person has withdrawn into their own dissatisfaction.

It is typically used in casual or semi-formal contexts to describe someone's outward appearance (a "glum expression") or a general mood following a specific setback.