したび下火shitabi
1.
The diminishing intensity of a fire, indicating that the flames are becoming weaker or less vigorous.
2.
The gradual reduction in energy or momentum of a situation, event, or activity that was once lively or vigorous.
3.
In culinary terms, the method of applying heat from below, as opposed to direct heat from above, to cook or prepare food.
4.
A term used in Zen Buddhism, specifically referring to the act of lighting a fire during cremation, originally implying the initiation of fire with a torch.
Example:
化学業界はすべてが下火になるまで再投資を控えています。