eau dure

\o dyʁ\

/\o dyʁ\/ noun

The verdict

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

Unranked
below top-frequency French
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Eau contenant beaucoup d’ions calcium et magnésium, en particulier dont le titre hydrotimétrique est compris entre 30 et 40°f.

Corpus desk

Index FR-eau-dure · eau dure · French

eau dure · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "E" thin
  • PHOTO-UNK Peer pending

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 eau dure
PropertyValue
Headwordeau dure
LanguageFrench
Part of speechNoun
IPA\o dyʁ\
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « eau dure » en français

eau durereste hors des 100.000 mots français les plus fréquents, dans la longue queue du vocabulaire technique, archaïque ou rare, là où le doute d'orthographe frappe.

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

Rare enough to double-check

eau dure is uncommon French outside the top frequency list, classed as anoun, transcribed \o dyʁ\. Rarity is why readers land here mid-draft. Gloss: "Eau contenant beaucoup d’ions calcium et magnésium, en particulier dont le titre hydrotimétrique est compris entre 30 et 40°f.".

eau dure has no tracked misspelling variants, which points to an orthography that plays by predictable French rules. This entry stands alone in our confusable dataset, since no other headword is close enough in sound or shape to pair with it.

This entry carries no recorded etymology, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is eau dure, spelled E-A-U- -D-U-R-E.

Definition

  1. 1
    Eau contenant beaucoup d’ions calcium et magnésium, en particulier dont le titre hydrotimétrique est compris entre 30 et 40°f.

Recorded use

Wiktionary example

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

  1. L’eau douce, au contact du savon donne au toucher une impression onctueuse, tandis que l’eau dure est rêche.

Antonyms

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 "eau dure"?
"eau dure" is spelled E-A-U- -D-U-R-E. The IPA pronunciation is \o dyʁ\.
What does "eau dure" mean?
As a noun, "eau dure" means: Eau contenant beaucoup d’ions calcium et magnésium, en particulier dont le titre hydrotimétrique est compris entre 30 et 40°f.
How do you pronounce "eau dure"?
The IPA (International Phonetic Alphabet) transcription for "eau dure" is \o dyʁ\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "eau dure" come from?
"eau dure" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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