1. superlative form of dun; of the dullest grayish-brown color
Usage: superlative degree
2. superlative form of dun; most dull or dreary in appearance or mood
Usage: superlative degree; figurative

Examples

• The dunnest shade of brown was used for the interior walls.
• On the dunnest winter days, the landscape looked almost colorless.
• She wore the dunnest outfit in her closet to blend into the background.
• The dunnest light filtered through the old, dusty windows.
• That was the dunnest performance of the entire season.
• The dunnest corner of the museum held the oldest artifacts.