1. most rough or irritating to the touch; causing the most scratching sensation
Usage: superlative form of scratchy
2. most harsh or grating in sound
Usage: superlative form of scratchy; referring to audio quality

Examples

• This wool sweater is the scratchiest one I own.
• The scratchiest fabric made her skin red and itchy.
• Of all the blankets, this one feels the scratchiest against my skin.
• The old record player produced the scratchiest sound quality.
• His voice was at its scratchiest after shouting at the game.
• The scratchiest recording made it hard to understand the words.