1. superlative form of dusty; covered with the most dust or containing the most dust particles
2. superlative form of dusty; most resembling dust in color, texture, or appearance

Examples

• The attic was the dustiest room in the entire house.
• After the construction project, the dustiest surfaces were the windowsills and shelves.
• That old book had the dustiest pages I had ever seen.
• The road became dustiest during the dry season when no rain fell for months.
• Her collection of vintage records sat in the dustiest corner of the basement.
• The dustiest part of the desert stretched endlessly across the horizon.