Not subject to fading; remaining bright, fresh, or vivid despite time or exposure; permanent in color or quality.
From 'fade' + '-less' suffix, which means 'without' or 'lacking.' The '-less' suffix derives from Old English leas and is highly productive for creating negations.
Fadeless became famous through the dye industry in the late 1800s as manufacturers competed to advertise 'fadeless colors'—a marketing word that eventually entered general language as competition heated up.
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