What does "waterproof" mean?
A substance or preparation for rendering cloth, leather, etc., impervious to water.
Waterproof
/ˈwɔːtəˌpruːf/ adj, noun, verb
adj, noun, verb ·Common ·High school level
Meaning at a glance
- Primary sense: A substance or preparation for rendering cloth, leather, etc., impervious to water.
- Grammar: waterproof is listed as adj, noun, verb.
- Nearest alternatives: raincoat, airtight, aquatic study, asphalted.
- Useful contrasts: bibulous, leakier, rainproof.
- Usage evidence: The young campers were kitted out with new waterproof jackets.
How to use "waterproof"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "waterproof" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "waterproof" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "waterproof" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "waterproof" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "waterproof" is acting as adj, noun, verb in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "raincoat" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "waterproof", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Noun
- 1 A substance or preparation for rendering cloth, leather, etc., impervious to water.
- 2 a water-resistant coat wordnet
- 3 Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; especially, an outer garment made of such material.
- 4 any fabric impervious to water wordnet
Verb
- 1 To make waterproof or water-resistant.
"The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania. The first barrels of crude fetched $18 (around $450 at today’s prices)."
- 2 make watertight wordnet
Adjective
- 1 Resistant to the effects of water.
- 2 Made of or covered with material that doesn't allow water in.
"The captain did a safety drill. This covered where the emergency position-indicating radio beacon (EPIRB) was located, how to make a mayday call, and where the fire extinguishers were. A crew member demonstrated how to put on an immersion suit. These survival suits are waterproof full-body garments with a hood and integral three-finger gloves and boots. They are bulky and hard to get on but far more likely to save your life in cold water than a lifejacket."
- 3 Incapable of failing; unassailable. figuratively
"The only waterproof plan and the one increasingly adopted by leading trades is the consolidation of the interests of all parties in a scheme of amalgamation."
Adjective
- 1 not permitting the passage of water wordnet
Example
"The young campers were kitted out with new waterproof jackets."
Common questions
What is a synonym for "waterproof"?
Common synonyms include: raincoat, airtight, aquatic study, asphalted, bold, calking.
How do you use "waterproof" in a sentence?
The young campers were kitted out with new waterproof jackets.
How do you pronounce "waterproof"?
Pronounced /ˈwɔːtəˌpruːf/.
Etymology
From water + -proof. Compare West Frisian wetterproef (“waterproof”), Dutch waterproef (“waterproof”).