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Waterproof: Definition, Usage & Key Differences (2 meaning)
Meaning 1：impervious to water (waterproof)
waterproof
/ˈwɔːtərpruːf/
adj./n.
Describes something that does not let water pass through or get inside.
impervious to water
➕
/ɪmˈpɜːrviəs tu ˈwɔːtər/
adj./n.
As an adjective, it describes a material or object's ability to prevent the penetration of water.
📘 Details & Usage
📖 Root Explanation
A compound of 'water' (liquid H2O) + 'proof' (suffix meaning 'resistant to or impervious to').
💡 Mnemonic
Imagine water trying to get in but it 'proofs' (proves) it can't. Water + proof = proven against water.
📖 Example
Before our mountain hike, we made sure our jackets were waterproof to stay dry in case of sudden rain.
We checked that our jackets could repel water to remain dry during unexpected rain on the hike.
🔗 Collocations
waterproof material – A fabric or substance that does not allow water to pass through.
waterproof coating – A protective layer applied to a surface to make it resistant to water.
waterproof sealant – A substance used to fill gaps and create a watertight barrier.
🔄 Synonyms
water-resistant (adj.) – Able to resist the penetration of water to some degree but not entirely.
impermeable (adj.) – Not allowing fluids, especially water, to pass through.
water-repellent (adj.) – Treated to cause water to form beads and roll off the surface.
🚫 Antonyms
water-permeable (adj.) – Allowing water to pass through.
absorbent (adj.) – Able to soak up liquids easily.
🌱 Derivatives
waterproofness (n.) – The quality or state of being waterproof.
waterproofing (n./v.) – The process or material used to make something waterproof; the act of making something waterproof.
📖 Cultural Story
The term 'waterproof' emerged in the early 19th century with advances in rubberized fabrics (e.g., Mackintosh coats). Its modern cultural relevance is immense, driven by consumer electronics marketing where 'waterproof' or 'water-resistant' ratings (like IP67) are key selling points for smartphones and wearables.
Meaning 2：raincoat (waterproof)
waterproof
/ˈwɔːtərpruːf/
adj./n.
A piece of clothing, especially a coat, that is designed to keep rain out.
raincoat
➕
/ˈreɪnkoʊt/
adj./n.
As a noun, it refers to a garment, typically a coat or jacket, specifically designed to protect the wearer from rain.
📘 Details & Usage
📖 Example
She grabbed her bright red waterproof from the closet as the forecast predicted showers all afternoon.
She took her red raincoat from the cupboard because the weather report said it would rain all day.
🔗 Collocations
packable waterproof – A lightweight raincoat designed to be folded into a small pouch for easy carrying.
heavy-duty waterproof – A robust, highly protective raincoat meant for severe weather conditions.
hooded waterproof – A raincoat that includes an attached hood for head protection.
🔄 Synonyms
🌱 Derivatives
waterproofs (n. (pl.)) – Waterproof clothing, especially as a set or for specific activities.
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