The uncoloured sketch at the front of the portfolio showed the artist's skill in composition.

The room felt uncolourful despite the new decor, as if someone had muted every hue.

The ancient manuscript was deemed uncolourable after years of fading and damage.

Please uncolour the drawing before scanning it, so the printer uses less ink.

The mathematician discussed the graph's uncolourability during the seminar.

The uncolouredness of the paper emphasized the boldness of the ink strokes.