waterproof
B2Common across all registers, from everyday to technical.
Definition
Meaning
Impervious to water; not allowing water to pass through.
Capable of resisting the penetration of water under specified conditions; also used figuratively to describe something that is unassailable or failsafe.
Linguistics
Semantic Notes
The adjective can describe both inherent material properties and treated items. The verb denotes the act of making something resistant to water. It often implies a functional standard, not absolute impermeability.
Dialectal Variation
British vs American Usage
Differences
No significant semantic differences. The verb 'to waterproof' is equally common. In the outdoor/travel sector, 'waterproof' is standard; the British English term 'waterproofs' as a noun for clothing (e.g., a set of waterproof jacket and trousers) is less common but still understood in American English.
Connotations
Neutral functional term in both. The noun form 'waterproofs' is more established in UK English for outdoor gear.
Frequency
Comparably high frequency in both varieties due to common use in product descriptions and everyday life.
Vocabulary
Collocations
Grammar
Valency Patterns
[adj.] The coat is waterproof.[verb] We need to waterproof the tent.[noun, usually pl.] Don't forget your waterproofs for the hike.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “As an adjective, no common idioms. The concept is used in phrases like 'waterproof alibi' (an unassailable alibi) or 'waterproof argument' (a logically sound argument).”
Usage
Context Usage
Business
Marketing and product specifications for clothing, electronics, and building materials.
Academic
Materials science, engineering, and textile technology.
Everyday
Discussing clothing, outdoor gear, watches, and phone cases.
Technical
Referring to standards (e.g., IP67/IP68 ratings for electronics), fabric treatments (e.g., Gore-Tex), or construction materials.
Examples
By Part of Speech
verb
British English
- We should waterproof the shed roof before autumn.
- The fabric has been waterproofed with a special spray.
American English
- We need to waterproof the deck with a good sealant.
- They waterproofed their boots before the camping trip.
adverb
British English
- This watch is rated to be 100 metres waterproof.
- The bag is not constructed waterproof enough for a monsoon.
American English
- The camera is advertised as being fully waterproof.
- He claimed the device was built waterproof from the factory.
Examples
By CEFR Level
- My new jacket is waterproof.
- Is your watch waterproof?
- You should buy a waterproof bag for your laptop in case it rains.
- The contract must be waterproof to avoid any future legal problems.
- Despite being marketed as waterproof, the hiking boots let in moisture after prolonged exposure.
- The manufacturer offers a service to professionally waterproof your outdoor gear.
- The novel's plot hinges on a seemingly waterproof alibi that the detective methodically dismantles.
- Advances in nanotechnology have enabled the creation of superhydrophobic surfaces that are effectively self-waterproofing.
Learning
Memory Aids
Mnemonic
Think of a PROOF that can stand against WATER: WATER-PROOF. Like a coat that provides proof against the rain.
Conceptual Metaphor
PROTECTION IS A BARRIER AGAINST LIQUID. Often conceptualised as a shield or sealed container.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'водонепроницаемый' (waterproof) and 'водостойкий' (water-resistant). 'Waterproof' is the stronger claim. Avoid literal calques like 'водопруф'.
Common Mistakes
- Using 'waterproof' as a synonym for 'water-resistant' (the latter is weaker). Incorrect pluralisation (e.g., 'waterproofs' for a single item).
Practice
Quiz
What is the most precise meaning of 'waterproof' in a technical specification?
FAQ
Frequently Asked Questions
'Waterproof' implies a higher degree of protection, meaning water should not penetrate under specific conditions (e.g., depth, pressure, time). 'Water-resistant' means it can resist the penetration of water to some degree but not entirely, especially under more strenuous conditions.
Yes, 'to waterproof' something means to treat or construct it so that it becomes impervious to water (e.g., 'to waterproof a basement').
Yes, it is a compound adjective/noun/verb formed from 'water' + 'proof' (meaning 'resistant to' or 'impervious to').
It is a plural noun, chiefly British, referring to waterproof clothing, especially a jacket and trousers, worn for protection against rain.
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