adjective
- resistant to fading when exposed to sunlight
Examples
- The sunfast fabric maintained its bright colors even after months outdoors.
- She chose sunfast curtains for the south-facing windows.
- The manufacturer guarantees these sunfast dyes will not fade.
- Sunfast materials are essential for outdoor furniture.
- The artist used sunfast paints to ensure the mural would last.
- These sunfast threads are perfect for quilts that will be displayed.