souvssudConfusable pair

Which to use

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

#10,242
“sou” frequency rank
#439
“sud” frequency rank
10681
confusion score

Side-by-Side Comparison

Feature sou sud
Definition Monnaie d’or médiévale, dérivant du solidus romain. Point cardinal opposé au nord ; direction du pôle de l’hémisphère austral et correspondant à l’azimut 180°.

Where the eye mixes sou and sud

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

3 ch
sou
3 ch
sud

Why the eye confuses sou with sud

A purely visual mix-up. sou (\su\) and sud (\syd\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 10681, derived from the frequency rank of both members and their visual similarity.

sou is recorded at frequency rank #10,242, classified as anoun, pronounced \su\. sud is at rank #439, tagged as anoun, pronounced \syd\.

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 10681, this pair ranks #412,044 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sou vs sud

Shared letters: su. Private to "sou": o. Private to "sud": d.

"sou" · 3 letters · shape CVV  ·  "sud" · 3 letters · shape CVC

Frequently Asked Questions

Do "sou" and "sud" mean the same thing in a sentence?
No. They are said differently (\su\ versus \syd\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "sou" or "sud"?
"sud" is the more common of the two: it sits at frequency rank #439 in our French list, against #10,242 for "sou". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "sou" and "sud" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sou" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sud" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #412,044 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sou" and "sud" also get mixed up with nearby pairs, the highest-scored neighbour is "sou vs suu". Nearby pair

Confusion rank #412,044 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