saめるmeru
1.

To transition from a hot condition to a cooler state, often describing food or drink that has lost its initial heat, impacting its quality or flavor.

2.

To experience a reduction in emotional intensity or enthusiasm, signifying that heightened feelings or excitement have diminished over time.

3.

To undergo a fading of color or brilliance, leading to a diminished appearance or luster, reflecting a loss of vitality or brightness.

Example:

スープは冷めていない。