eau dure

\o dyʁ\

/\o dyʁ\/ noun

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“eau dure” is outside the top-ranked French vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency French
8
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Eau contenant beaucoup d’ions calcium et magnésium, en particulier dont le titre hydrotimétrique est compris entre 30 et 40°f.

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

Where “eau dure” sits in French frequency

eau dure falls outside the top-100,000 ranked French words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

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

Spelling & Dictionary Insight

The French entry for eau dure is 8 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as \o dyʁ\. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "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.

Antonyms

eau douce

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.

Using “eau dure”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct French spelling is E-A-U- -D-U-R-E - every other letter order is a misspelling in standard orthography.
  • Say it as \o dyʁ\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more French words and confusable pairs in the same reference. French 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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list