Find Synonyms
waterproof Synonyms
Another word for waterproof
Choosing another word for waterproof depends on context, so the 15 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
• adjective (Context 1)
Impervious to water; made or treated so that water cannot penetrate or cause damage.
Usage Example
"She packed a watertight jacket in case of sudden mountain rainstorms."
Strongest
watertight
impermeable
Strong
rainproof
impervious
water-resistant
water-repellent
weatherproof
• verb (Context 2)
To treat a material, garment, or structure so that water cannot penetrate it.
Usage Example
"They hired a contractor to seal the basement walls before finishing the renovation."
Strong
seal
weatherproof
proof
caulk
• noun (Context 3)
A garment, especially a coat, jacket, or pair of trousers, made of material that prevents water from passing through.
Usage Example
"The hikers put on their waterproofs before setting out across the wet moorland."
Strongest
raincoat
Strong
mackintosh
slicker
oilskin
anorak
Opposites of waterproof
The opposite of waterproof shifts depending on context. Common opposites include:
permeable
porous
absorbent
leaky
soak
saturate
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Waterproof. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/waterproof