Which to use
“sight” and “sigma” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #2,808
- “sight” frequency rank
- #14,835
- “sigma” frequency rank
- 17643
- confusion score
Side-by-Side Comparison
| Feature | sight | sigma |
|---|---|---|
| Definition | The ability to see. | The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient. |
Where the eye mixes sight and sigma
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses sight with sigma
A purely visual mix-up. sight (/saɪt/) and sigma (/ˈsɪɡmə/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 17643, derived from the frequency rank of both members and their visual similarity.
sight is recorded at frequency rank #2,808, classified as anoun, pronounced /saɪt/. sigma is at rank #14,835, tagged as anoun, pronounced /ˈsɪɡmə/.
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 17643, this pair ranks #450,102 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sight vs sigma
Shared letters: gis. Private to "sight": ht. Private to "sigma": am.
"sight" · 5 letters · shape CVCCC · "sigma" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sight" for "sigma" ever safe?
Frequency check: "sight" vs "sigma" - which ranks higher?
Useful next steps
Eye-level mix-up between "sight" and "sigma" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sight" 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 #450,102 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sight" and "sigma" also get mixed up with nearby pairs, the highest-scored neighbour is "sigma vs Sitka". 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 #450,102 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.