seulvsskullWhich spelling fits?

Quick tell: seul is a adjective, skull is a noun, so they fill different roles in a sentence.

Which to use

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

#218
“seul” frequency rank
#49,364
“skull” frequency rank
49582
confusion score

Side-by-Side Comparison

Feature seul skull
Definition Qui est sans compagnie ; qui n’est pas avec d’autres. Crâne.

Where the eye mixes seul and skull

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
seul
5 ch
skull

Why the eye confuses seul with skull

These two trip readers on the page rather than in the ear: seul is \sœl\ while skull is \ˈskəl\. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 49582, derived from the frequency rank of both members and their visual similarity.

seul is recorded at frequency rank #218, classified as anadj, pronounced \sœl\. skull is at rank #49,364, tagged as anoun, pronounced \ˈskəl\.

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 49582, this pair ranks #169,472 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of seul vs skull

Shared letters: lsu. Private to "seul": e. Private to "skull": k.

"seul" · 4 letters · shape CVVC  ·  "skull" · 5 letters · shape CCVCC

Known mistypes of this pair

  • seulesul · selu · seull · sseul · suel
  • skullksull · skkull · sklul · skul · sskull · sukll

Frequently Asked Questions

Is swapping "seul" for "skull" ever safe?
No - they are not even the same part of speech. "seul" is an adjective and "skull" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "seul" vs "skull" - which ranks higher?
"seul" is the more common of the two: it sits at frequency rank #218 in our French list, against #49,364 for "skull". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "seul" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "skull" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #169,472 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "seul" and "skull" also get mixed up with nearby pairs, the highest-scored neighbour is "skull vs Soult". 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 #169,472 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