CLOUDING

To become foggy or gloomy, or obscured from sight.

"The glass clouds when you breathe on it."

To overspread or hide with a cloud or clouds.

"The sky is clouded."

To make obscure.

"All this talk about human rights is clouding the real issue."

A cloudy appearance.

A mottled appearance given to ribbons and silks in the process of dyeing.

A diversity of colours in yarn, recurring at regular intervals.