Enter a clue or pattern or both:
The Clue
Impervious to H2O (10 letter answer)
The Answer
WATERPROOF
Tags
Notes
The answer WATERPROOF is so rare that it appears less than once every 2500 puzzles.
Related Clues
British raincoat
Definition
WATERPROOF as a noun:
1. any fabric impervious to water
2. (raincoat, waterproof) = a water-resistant coat
WATERPROOF as a verb:
1. make watertight; "Waterproof the coat"
WATERPROOF as an adjective:
1. (rainproof, waterproof, waterproofed) = not permitting the passage of water