sudvssureWhich spelling fits?

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

Which to use

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

#439
“sud” frequency rank
#8,164
“sure” frequency rank
8603
confusion score

Side-by-Side Comparison

Feature sud sure
Definition Point cardinal opposé au nord ; direction du pôle de l’hémisphère austral et correspondant à l’azimut 180°. Féminin singulier de sur : qui a un goût acide et aigrelet.

Where the eye mixes sud and sure

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

3 ch
sud
4 ch
sure

Visual trap between sud and sure

These two trip readers on the page rather than in the ear: sud is \syd\ while sure is \syʁ\. 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 8603, derived from the frequency rank of both members and their visual similarity.

sud is recorded at frequency rank #439, classified as anoun, pronounced \syd\. sure is at rank #8,164, tagged as anadj, pronounced \syʁ\.

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 8603, this pair ranks #419,479 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sud vs sure

Shared letters: su. Private to "sud": d. Private to "sure": er.

"sud" · 3 letters · shape CVC  ·  "sure" · 4 letters · shape CVCV

Known mistypes of this pair

  • suresrue · ssure · surre · usre

Frequently Asked Questions

Is swapping "sud" for "sure" ever safe?
No - they are not even the same part of speech. "sud" is a noun and "sure" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sud" or "sure"?
"sud" is the more common of the two: it sits at frequency rank #439 in our French list, against #8,164 for "sure". 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 "sud" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sure" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #419,479 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sud" and "sure" also get mixed up with nearby pairs, the highest-scored neighbour is "sure vs suu". 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 #419,479 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