Which to use
“sto” is a preposition and “sum” is a noun - they look or sound alike but fill different roles in a sentence.
- #31,269
- “sto” frequency rank
- #30,825
- “sum” frequency rank
- 62094
- confusion score
Side-by-Side Comparison
| Feature | sto | sum |
|---|---|---|
| Definition | Contraction de la préposition et de l'article défini, « dans le ». | Unité monétaire utilisée en Ouzbékistan |
Where the eye mixes sto and sum
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: sto vs sum
These two trip readers on the page rather than in the ear: sto is \sɛ\ while sum is \sum\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (preposition vs noun), which is usually the fastest check. Our composite confusion score for this pair is 62094, derived from the frequency rank of both members and their visual similarity.
sto is recorded at frequency rank #31,269, classified as aprep, pronounced \sɛ\. sum is at rank #30,825, tagged as anoun, pronounced \sum\.
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 62094, this pair ranks #88,844 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of sto vs sum
Shared letters: s. Private to "sto": ot. Private to "sum": mu.
"sto" · 3 letters · shape CCV · "sum" · 3 letters · shape CVC
Frequently Asked Questions
Do "sto" and "sum" mean the same thing in a sentence?
Which is more common, "sto" or "sum"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sto" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #88,844 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sto" and "sum" also get mixed up with nearby pairs, the highest-scored neighbour is "sto vs suu". Nearby pair
Confusion rank #88,844 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.