Waterproof

"Waterproof" in Japanese

防水の

bōsui-no

(resistant to water)

防水の

bōsui-no

(made or covered with material that doesn't let water in)

防水加工する

bousui-kakō suru

(to make waterproof or water-resistant)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.