Synonyms of waterproof
raincoatDictionary • Put on your waterproof, it's raining!
mac (British, informal)
oilskinsDictionary • He was wearing waterproofs over his clothes.
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impermeableSomething that is impermeable will not allow fluid to pass through it.
• The canoe is made from an impermeable wood.
watertightSomething that is watertight does not allow water to pass through it, for example because it is tightly sealed.
• The batteries are enclosed in a watertight compartment.
Thesaurus for waterproof from the Collins English Thesaurus