Which to use
“posit” and “psi” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,036
- “posit” frequency rank
- #16,099
- “psi” frequency rank
- 55135
- confusion score
Side-by-Side Comparison
| Feature | posit | psi |
|---|---|---|
| Definition | Something that is posited; a postulate. | The twenty-third letter of Classical and Modern Greek and the twenty-fifth letter of Old and Ancient Greek. |
Where the eye mixes posit and psi
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. posit runs 5 letters (CVCVC) against psi's 3 (CCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between posit and psi
A purely visual mix-up. posit (/ˈpɒzɪt/) and psi (/psaɪ/) 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 2 letter(s) in length. Our composite confusion score for this pair is 55135, derived from the frequency rank of both members and their visual similarity.
posit is recorded at frequency rank #39,036, classified as anoun, pronounced /ˈpɒzɪt/. psi is at rank #16,099, tagged as anoun, pronounced /psaɪ/.
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 55135, this pair ranks #135,941 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of posit vs psi
Shared letters: ips. Private to "posit": ot. Private to "psi": -.
"posit" · 5 letters · shape CVCVC · "psi" · 3 letters · shape CCV
Known mistypes of this pair
- posit ← opsit · poist · positt · possit · posti · pposit · psoit
Frequently Asked Questions
Is swapping "posit" for "psi" ever safe?
Which is more common, "posit" or "psi"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "posit" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "psi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #135,941 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "posit" and "psi" also get mixed up with nearby pairs, the highest-scored neighbour is "poser vs posit". 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 #135,941 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.