darkens

the sky darkens as the storm approaches.

her mood darkens when she thinks about the past.

the room darkens when the lights go out.

as the sun sets, the landscape darkens beautifully.

the water darkens after the rain.

his expression darkens at the mention of her name.

the mood in the room darkens during the argument.

as night darkens, the stars begin to shine.

the plot darkens as the story unfolds.

the paint darkens as it dries.