lightfast
adjective
light·fast
ˈlīt-ˌfast 
: resistant to light and especially to sunlight
especially
: colorfast to light
Examples of lightfast in a Sentence
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Synthetic dyes were more colorfast, lightfast, and consistent than natural dyes, and the industry boomed.
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Literary Hub, 2 Apr. 2026
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Literary Hub, 2 Apr. 2026
Cite this Entry
“Lightfast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lightfast. Accessed 12 Apr. 2026.
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