The graybeard sat by the fireplace, reminiscing about his youth.

The graybeards gathered around the fire to share their wisdom.

Her hair is grayer than mine.

This is the grayest day of the year.

The graylings in the river were swimming gracefully.

She painted the walls grayishly.

The grayishness of the sky made it feel like it was going to rain.

The sky was grayly overcast with clouds.

The email server is graylisting suspicious emails.

The company maintains several graylists to monitor potential risks.