waterproof
/ˈwɔːtəˌpruːf/
"waterproof" is a 10-letter English headword indexed on PlainSpell.
The verdict
“waterproof” is a moderately-common English word, ranked #14,049 in English word frequency and used as an adjective.
- #14,049
- frequency rank, English
- 10
- letters
- 15
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Resistant to the effects of water.
| Property | Value |
|---|---|
| Headword | waterproof |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈwɔːtəˌpruːf/ |
| Letters | 10 |
| Frequency rank | #14,049 |
| Misspellings tracked | 15 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “waterproof” sits in English frequency
Spelling & Dictionary Insight
The English entry for waterproof is 10 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈwɔːtəˌpruːf/. Corpus data places it at rank #14,049 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 15 likely wrong-spelling variants for waterproof, with forms such as "awterproof", "waetrproof", and "wateprroof". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From water + -proof. Compare West Frisian wetterproef (“waterproof”), Dutch waterproef (“waterproof”). The correct English form is waterproof, spelled W-A-T-E-R-P-R-O-O-F.
Definition
- 1Resistant to the effects of water.
- 2Made of or covered with material that doesn't allow water in.
- 3Incapable of failing; unassailable.
Etymology
From water + -proof. Compare West Frisian wetterproef (“waterproof”), Dutch waterproef (“waterproof”).
Synonyms
This word in other languages
Common misspellings
Also misspelled as: awterproof,waetrproof,wateprroof,waterporof,waterpproof,waterprof,waterprofo,waterprooff,waterprroof,waterrpoof,waterrproof,watreproof,watterproof,wtaerproof,wwaterproof
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of waterproof - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "waterproof"?
What does "waterproof" mean?
What are common misspellings of "waterproof"?
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Is PlainSpell free to use?
Using “waterproof”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is W-A-T-E-R-P-R-O-O-F - every other letter order is a misspelling in standard orthography.
- Say it as /ˈwɔːtəˌpruːf/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.