psivspubWhich spelling fits?

Which to use

“psi” and “pub” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#16,099
“psi” frequency rank
#4,880
“pub” frequency rank
20979
confusion score

Side-by-Side Comparison

Feature psi pub
Definition The twenty-third letter of Classical and Modern Greek and the twenty-fifth letter of Old and Ancient Greek. A public house where beverages, primarily alcoholic, may be bought and consumed, also providing food and sometimes entertainment such as live music or television.

Where the eye mixes psi and pub

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
psi
3 ch
pub

Look-alike desk: psi vs pub

A purely visual mix-up. psi (/psaɪ/) and pub (/pʌb/) 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 20979, derived from the frequency rank of both members and their visual similarity.

psi is recorded at frequency rank #16,099, classified as anoun, pronounced /psaɪ/. pub is at rank #4,880, tagged as anoun, pronounced /pʌb/.

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 20979, this pair ranks #427,286 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of psi vs pub

Shared letters: p. Private to "psi": is. Private to "pub": bu.

"psi" · 3 letters · shape CCV  ·  "pub" · 3 letters · shape CVC

Frequently Asked Questions

Can "psi" and "pub" be used interchangeably?
No. They are said differently (/psaɪ/ versus /pʌb/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "psi" or "pub"?
"pub" is the more common of the two: it sits at frequency rank #4,880 in our English list, against #16,099 for "psi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "psi" and "pub" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "psi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pub" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #427,286 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "psi" and "pub" also get mixed up with nearby pairs, the highest-scored neighbour is "PPA vs psi". Nearby pair

Confusion rank #427,286 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list