st vs sto, What's the Difference?

Which to use

“st” is a symbol and “sto” is a preposition - they look or sound alike but fill different roles in a sentence.

#1,190
“st” frequency rank: #31,269
“sto” frequency rank: 32459
confusion score

Side-by-Side Comparison

Feature	st	sto
Definition	Symbole de la stère.	Contraction de la préposition et de l'article défini, « dans le ».

Letter map: st vs sto

Shared letters muted; letters that set st and sto apart highlighted. Shared run: 2.

2 ch

3 ch

sto

Grammar separator: st vs sto

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: st is asymbol and stoapreposition. On the page they differ by 1 extra letter(s) - “st” sits inside “sto”. Our composite confusion score for this pair is 32459, derived from the frequency rank of both members and their visual similarity.

st is recorded at frequency rank #1,190, classified as asymbol. sto is at rank #31,269, tagged as aprep, pronounced \sɛ\.

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 32459, this pair ranks #297,142 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of st vs sto

Shared letters: st. Private to "st": -. Private to "sto": o.

"st" · 2 letters · shape CC · "sto" · 3 letters · shape CCV

Frequently Asked Questions

Can "st" and "sto" be used interchangeably?

No - they are not even the same part of speech. "st" is a symbol and "sto" a preposition, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "st" vs "sto" - which ranks higher?

"st" is the more common of the two: it sits at frequency rank #1,190 in our French list, against #31,269 for "sto". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "st" vs "sto" is on the table, pick a follow-up below.

Full dictionary entry for "st" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "sto" - compare definitions side by side with the headword page. Word entry
This pair ranks #297,142 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"st" and "sto" also get mixed up with nearby pairs, the highest-scored neighbour is "sto vs suu". Nearby pair

Confusion rank #297,142 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.