Which to use
“so” is an adverb and “sou” is a noun - they look or sound alike but fill different roles in a sentence.
- #4,187
- “so” frequency rank
- #10,242
- “sou” frequency rank
- 14429
- confusion score
Side-by-Side Comparison
| Feature | so | sou |
|---|---|---|
| Definition | Ainsi, comme ça. | Monnaie d’or médiévale, dérivant du solidus romain. |
Where the eye mixes so and sou
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between so and sou
These two trip readers on the page rather than in the ear: so is \zoː\ while sou is \su\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “so” sits inside “sou”, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 14429, derived from the frequency rank of both members and their visual similarity.
so is recorded at frequency rank #4,187, classified as anadv, pronounced \zoː\. sou is at rank #10,242, tagged as anoun, pronounced \su\.
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 14429, this pair ranks #396,704 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of so vs sou
Shared letters: os. Private to "so": -. Private to "sou": u.
"so" · 2 letters · shape CV · "sou" · 3 letters · shape CVV
Frequently Asked Questions
Do "so" and "sou" mean the same thing in a sentence?
Frequency check: "so" vs "sou" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "so" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sou" - compare definitions side by side with the headword page. Word entry
- This pair ranks #396,704 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "so" and "sou" also get mixed up with nearby pairs, the highest-scored neighbour is "sou vs suu". Nearby pair
Confusion rank #396,704 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.