waterproofness

noun

"waterproofness" is a 14-letter English headword indexed on PlainSpell.

The verdict

“waterproofness” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The property of being waterproof.

Corpus desk

Index EN-waterproofness · waterproofness · English

waterproofness · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 14 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "W" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for waterproofness
PropertyValue
Headwordwaterproofness
LanguageEnglish
Part of speechNoun
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “waterproofness” in English

waterproofnessranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

waterproofness is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The property of being waterproof.".

No misspelling variants are generated for waterproofness in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From waterproof + -ness. The correct English form is waterproofness, spelled W-A-T-E-R-P-R-O-O-F-N-E-S-S.

Definition

  1. 1
    The property of being waterproof.

Recorded use

Wiktionary examples

These source excerpts show how waterproofness appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. In the fabric section, a textile twisting and tearing machine and a "Lissajou curve" [sic] abrader (covering a complete area in overlapping curves) are supplemented by apparatus for evaluating waterproofness, fibre diameter and light-fastness.
  2. To find the best rain jacket, we tested everything from waterproofness and breathability to fit, feel and packability.

Etymology

From waterproof + -ness.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "waterproofness"?
"waterproofness" is spelled W-A-T-E-R-P-R-O-O-F-N-E-S-S.
What does "waterproofness" mean?
As a noun, "waterproofness" means: The property of being waterproof.
What is the origin of the word "waterproofness"?
From waterproof + -ness. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list