lowering
1. [ adjective ] darkened by clouds
Synonyms: sullen heavy threatening
Examples:

"a heavy sky"

Related terms: cloudy
2. [ noun ] the act of causing to become less
Related terms: decrease tapering lower
3. [ noun ] the act of causing something to move to a lower level
Synonyms: letting_down
Related terms: movement lower
Similar spelling:   loweringly
  Loring
  Lorenzini
  Lorenzi