Which to use
“sigma” and “sima” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #36,291
- “sigma” frequency rank
- #25,451
- “sima” frequency rank
- 61742
- confusion score
Side-by-Side Comparison
| Feature | sigma | sima |
|---|---|---|
| Definition | Parte del intestino grueso que, en el hombre, continúa después del colon descendente, a la altura de la pelvis y es seguido por el recto. En esta parte los gases se acumulan para ser luego expulsados sin interferir con las heces. | Cavidad muy profunda que nace en la superficie terrestre. |
Where the eye mixes sigma and sima
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses sigma with sima
A purely visual mix-up. sigma ([ˈsiɣ̞ma]) and sima ([ˈsima]) 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 61742, derived from the frequency rank of both members and their visual similarity.
sigma is recorded at frequency rank #36,291, classified as anoun, pronounced [ˈsiɣ̞ma]. sima is at rank #25,451, tagged as anoun, pronounced [ˈsima].
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 61742, this pair ranks #54,384 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of sigma vs sima
Shared letters: aims. Private to "sigma": g. Private to "sima": -.
"sigma" · 5 letters · shape CVCCV · "sima" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Can "sigma" and "sima" be used interchangeably?
Frequency check: "sigma" vs "sima" - which ranks higher?
Useful next steps
Eye-level mix-up between "sigma" and "sima" 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 "sima" - compare definitions side by side with the headword page. Word entry
- This pair ranks #54,384 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "sigma" and "sima" also get mixed up with nearby pairs, the highest-scored neighbour is "sigma vs sila". 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 #54,384 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.