Which to use
“sida” and “sigma” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #6,557
- “sida” frequency rank
- #31,736
- “sigma” frequency rank
- 38293
- confusion score
Side-by-Side Comparison
| Feature | sida | sigma |
|---|---|---|
| Definition | Syndrome humain caractéristique d’une ou plusieurs maladies relevant d’un déficit immunitaire de l’organisme. | σ, ς, Σ, dix-huitième lettre et treizième consonne de l’alphabet grec. |
Where the eye mixes sida and sigma
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses sida with sigma
A purely visual mix-up. sida (\si.da\) and sigma (\siɡ.ma\) 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 38293, derived from the frequency rank of both members and their visual similarity.
sida is recorded at frequency rank #6,557, classified as anoun, pronounced \si.da\. sigma is at rank #31,736, tagged as anoun, pronounced \siɡ.ma\.
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 38293, this pair ranks #256,277 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sida vs sigma
Shared letters: ais. Private to "sida": d. Private to "sigma": gm.
"sida" · 4 letters · shape CVCV · "sigma" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "sida" and "sigma" mean the same thing in a sentence?
Which is more common, "sida" or "sigma"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sida" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sigma" - compare definitions side by side with the headword page. Word entry
- This pair ranks #256,277 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sida" and "sigma" also get mixed up with nearby pairs, the highest-scored neighbour is "salma vs sigma". 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 #256,277 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.