œufvsunWhat's the difference?

Quick tell: œuf is a noun, un is an adjective, so they fill different roles in a sentence.

Which to use

“œuf” is a noun and “un” is an adjective - they look or sound alike but fill different roles in a sentence.

#7,512
“œuf” frequency rank
#12
“un” frequency rank
7524
confusion score

Side-by-Side Comparison

Feature œuf un
Definition Structure reproductrice produite par les animaux ovipares (oiseaux, reptiles, amphibiens, insectes, etc.) ou par d’autres animaux, formée dans les ovaires ou les oviductes, et comprenant un zygote ou un embryon en développement entouré de réserves nutritives (vitellus) et d’enveloppes protectrices. Elle permet le développement de l’embryon à l’extérieur du corps de la mère ou dans l’environnement. Marque l’unité, le fait qu’une personne ou une chose est seule, unique en son espèce.

Where the spellings diverge

Shared letters are muted; the letters that actually set œuf and un apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch
œuf
2 ch
un

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: œuf is \œf\ while un is \œ̃\. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 7524, derived from the frequency rank of both members and their visual similarity.

œuf is recorded at frequency rank #7,512, classified as anoun, pronounced \œf\. un is at rank #12, tagged as anadj, pronounced \œ̃\.

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 7524, this pair ranks #422,912 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of œuf vs un

Shared letters: u. Private to "œuf": . Private to "un": n.

"œuf" · 3 letters · shape VVC  ·  "un" · 2 letters · shape VC

Frequency comparison

œuf#7,512
un#12

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "œuf" and "un" be used interchangeably?
No - they are not even the same part of speech. "œuf" is a noun and "un" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "œuf" or "un"?
"un" is the more common of the two: it sits at frequency rank #12 in our French list, against #7,512 for "œuf". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering œuf vs un

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “œuf”; for an adjective, it's “un”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “œuf” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list