Which to use
“sigma” and “sign” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #31,736
- “sigma” frequency rank
- #31,257
- “sign” frequency rank
- 62993
- confusion score
Side-by-Side Comparison
| Feature | sigma | sign |
|---|---|---|
| Definition | σ, ς, Σ, dix-huitième lettre et treizième consonne de l’alphabet grec. | Panneau (routier, de rue) ; panonceau ; pancarte (sur un mur, une vitrine, etc.) ; affiche (publicitaire), écriteau (handmade sign). |
Where the eye mixes sigma and sign
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. sigma runs 5 letters (CVCCV) against sign's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses sigma with sign
A purely visual mix-up. sigma (\siɡ.ma\) and sign (\saɪn\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 62993, derived from the frequency rank of both members and their visual similarity.
sigma is recorded at frequency rank #31,736, classified as anoun, pronounced \siɡ.ma\. sign is at rank #31,257, tagged as anoun, pronounced \saɪn\.
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 62993, this pair ranks #84,195 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of sigma vs sign
Shared letters: gis. Private to "sigma": am. Private to "sign": n.
"sigma" · 5 letters · shape CVCCV · "sign" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Do "sigma" and "sign" mean the same thing in a sentence?
Frequency check: "sigma" vs "sign" - which ranks higher?
After this comparison
Eye-level mix-up between "sigma" and "sign" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sigma" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sign" - compare definitions side by side with the headword page. Word entry
- This pair ranks #84,195 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sigma" and "sign" also get mixed up with nearby pairs, the highest-scored neighbour is "sign vs sind". 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 #84,195 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.