Which to use
“sig” is a contraction and “sigma” is a noun - they look or sound alike but fill different roles in a sentence.
- #22,189
- “sig” frequency rank
- #36,291
- “sigma” frequency rank
- 58480
- confusion score
Side-by-Side Comparison
| Feature | sig | sigma |
|---|---|---|
| Definition | Contracción de signature (firma). | 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. |
Where the eye mixes sig and sigma
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. sig runs 3 letters (CVC) against sigma's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses sig with sigma
These two trip readers on the page rather than in the ear: sig is /sɪɡ/ while sigma is [ˈsiɣ̞ma]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “sig” sits inside “sigma”, and the parts of speech differ too (contraction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 58480, derived from the frequency rank of both members and their visual similarity.
sig is recorded at frequency rank #22,189, classified as acontraction, pronounced /sɪɡ/. sigma is at rank #36,291, tagged as anoun, pronounced [ˈsiɣ̞ma].
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 58480, this pair ranks #66,307 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of sig vs sigma
Shared letters: gis. Private to "sig": -. Private to "sigma": am.
"sig" · 3 letters · shape CVC · "sigma" · 5 letters · shape CVCCV
Known mistypes of this pair
- sigma ← cigma · isgma · sgima · sigam · siggma · sigmma · simga · ssigma
Frequently Asked Questions
Is swapping "sig" for "sigma" ever safe?
In ordinary Spanish text, does "sig" or "sigma" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sig" 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 #66,307 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "sig" and "sigma" 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 #66,307 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.