English
sunfast
From sun + fast.
Today it means
adj Colorfast in a way that will not fade in sunlight.
Sources
Sources: Wiktionary, “sunfast”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / sunfast