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Updated June 2026
Impervious to water; designed or treated to prevent water from entering or passing through. As a verb, it means to make something resistant to water.
“Make sure to wear waterproof clothing when hiking in the rain.”
wa·ter·proof
Contains multiple vowels A, E, O with double O and letters W, T, R, P, F
Worth 18 points; the W and F provide good value, compound word
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