Definition

Describing a material or color that does not lose its brightness or change when exposed to sunlight.

Example

The sunfast fabric is perfect for outdoor furniture because it won't fade in the sun.

Conversation

I just bought some new curtains for the living room.

Oh nice! Are they sunfast?

Yes, they are! I wanted to make sure they wouldn't fade in the sunlight.

That's a smart choice; it'll keep the colors vibrant.

Synonyms & Antonyms

Root Explanation

Sunfast → It is formed from "sun" (from Old English "sunne", meaning the star that provides light and warmth) and "fast" (from Old English "fæst", meaning firm or secure). The word "sunfast" refers to something that is resistant to fading or damage from sunlight.

Memory Tip

Think of the sun providing light and warmth, and remember that "sunfast" means something that is secure or firm against the sun's effects.

Visually Confused Words