Which to use
“STS” is a noun and “suis” is a verb - they look or sound alike but fill different roles in a sentence.
- #40,514
- “STS” frequency rank
- #77
- “suis” frequency rank
- 40591
- confusion score
Side-by-Side Comparison
| Feature | STS | suis |
|---|---|---|
| Definition | Navette spatiale américaine ayant effectué 135 vols pour l'agence spatiale américaine (NASA) entre le 12 avril 1981 et juillet 2011. | Première personne du singulier de l’indicatif présent de être. |
Where the eye mixes STS and suis
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses STS with suis
These two trip readers on the page rather than in the ear: STS is \ɛs te ɛs\ while suis is \sɥi\. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 40591, derived from the frequency rank of both members and their visual similarity.
STS is recorded at frequency rank #40,514, classified as anoun, pronounced \ɛs te ɛs\. suis is at rank #77, tagged as averb, pronounced \sɥi\.
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 40591, this pair ranks #239,373 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of STS vs suis
Shared letters: s. Private to "STS": t. Private to "suis": iu.
"STS" · 3 letters · shape CCC · "suis" · 4 letters · shape CVVC
Known mistypes of this pair
- suis ← sius · ssuis · suiss · susi · usis
Frequently Asked Questions
Do "STS" and "suis" mean the same thing in a sentence?
Frequency check: "STS" vs "suis" - which ranks higher?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "STS" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "suis" - compare definitions side by side with the headword page. Word entry
- This pair ranks #239,373 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "STS" and "suis" also get mixed up with nearby pairs, the highest-scored neighbour is "STS 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 #239,373 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.