UbuvsuxWhat's the difference?

Quick tell: Ubu is a name, ux is a typographic variant, so they fill different roles in a sentence.

Which to use

“Ubu” is a name and “ux” is a typographic variant - they look or sound alike but fill different roles in a sentence.

#49,991
“Ubu” frequency rank
#28,392
“ux” frequency rank
78383
confusion score

Side-by-Side Comparison

Feature Ubu ux
Definition La pièce de théâtre Ubu roi d’Alfred Jarry. Orthographe par contrainte typographique par système x de ŭ.

Where the eye mixes Ubu and ux

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
Ubu
2 ch
ux

Visual trap between Ubu and ux

These two trip readers on the page rather than in the ear: Ubu is \y.by\ while ux is \wo\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (name vs typographic variant), which is usually the fastest check. Our composite confusion score for this pair is 78383, derived from the frequency rank of both members and their visual similarity.

Ubu is recorded at frequency rank #49,991, classified as aname, pronounced \y.by\. ux is at rank #28,392, tagged as atypographic variant, pronounced \wo\.

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 78383, this pair ranks #25,891 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of Ubu vs ux

Shared letters: u. Private to "Ubu": b. Private to "ux": x.

"Ubu" · 3 letters · shape VCV  ·  "ux" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "Ubu" for "ux" ever safe?
No - they are not even the same part of speech. "Ubu" is a name and "ux" a typographic variant, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "Ubu" or "ux" show up more?
"ux" is the more common of the two: it sits at frequency rank #28,392 in our French list, against #49,991 for "Ubu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "Ubu" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ux" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #25,891 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Ubu" and "ux" also get mixed up with nearby pairs, the highest-scored neighbour is "Ubu vs upa". Nearby pair

Confusion rank #25,891 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