1. made resistant to water; treated so that water cannot pass through

1. past tense and past participle of waterproof; made something resistant to water

Examples

• The waterproofed jacket kept me dry during the storm.
• She waterproofed her hiking boots before the camping trip.
• The waterproofed basement walls prevented flooding.
• He waterproofed the deck with a special coating.
• The tent was already waterproofed when we bought it.
• They waterproofed the foundation to protect against moisture.
• My waterproofed watch works perfectly underwater.