darkening

See this word as a collocate cloud

meanwhile the skies had been	darkening	with storm clouds and untypically
the night train speeds on	darkening	sleepers clickety clack the train
spill creamy cargo through the	darkening	leaves a heron finds a
the icy streets of the	darkening	town for a while before
the ship the sky was	darkening	the pilot began to girn
home soon the day was	darkening	and he would be expecting
red and on the other	darkening	blue we stopped the coach
frae the change in the	darkening	field highland cattle stand loud