rubyvsrueWhich spelling fits?

Which to use

“ruby” and “rue” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#19,668
“ruby” frequency rank
#438
“rue” frequency rank
20106
confusion score

Side-by-Side Comparison

Feature ruby rue
Definition Rubis. Voie de circulation d'une ville, d'un bourg, d'un village, etc., généralement bordée de maisons ou de propriétés closes.

Where the eye mixes ruby and rue

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
ruby
3 ch
rue

Why the eye confuses ruby with rue

A purely visual mix-up. ruby (\ˈɹuː.bi\) and rue (\ʁy\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 20106, derived from the frequency rank of both members and their visual similarity.

ruby is recorded at frequency rank #19,668, classified as anoun, pronounced \ˈɹuː.bi\. rue is at rank #438, tagged as anoun, pronounced \ʁy\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 20106, this pair ranks #369,931 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ruby vs rue

Shared letters: ru. Private to "ruby": by. Private to "rue": e.

"ruby" · 4 letters · shape CVCV  ·  "rue" · 3 letters · shape CVV

Known mistypes of this pair

  • rubyrbuy · rruby · rubby · rubyy · ruyb · urby

Frequently Asked Questions

Is swapping "ruby" for "rue" ever safe?
No. They are said differently (\ˈɹuː.bi\ versus \ʁy\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "ruby" or "rue" show up more?
"rue" is the more common of the two: it sits at frequency rank #438 in our French list, against #19,668 for "ruby". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ruby" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rue" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #369,931 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ruby" and "rue" also get mixed up with nearby pairs, the highest-scored neighbour is "RGB vs ruby". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #369,931 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list