pissvspusWhat's the difference?

Which to use

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

#5,443
“piss” frequency rank
#28,336
“pus” frequency rank
33779
confusion score

Side-by-Side Comparison

Feature piss pus
Definition Urine. A whitish-yellow or yellow substance composed primarily of dead white blood cells and dead pyogenic bacteria, normally found in regions of bacterial infection.

Where the eye mixes piss and pus

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
piss
3 ch
pus

Look-alike desk: piss vs pus

A purely visual mix-up. piss (/pɪs/) and pus (/pʌs/) 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 33779, derived from the frequency rank of both members and their visual similarity.

piss is recorded at frequency rank #5,443, classified as anoun, pronounced /pɪs/. pus is at rank #28,336, tagged as anoun, pronounced /pʌs/.

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 33779, this pair ranks #326,497 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of piss vs pus

Shared letters: ps. Private to "piss": i. Private to "pus": u.

"piss" · 4 letters · shape CVCC  ·  "pus" · 3 letters · shape CVC

Known mistypes of this pair

  • pissipss · pis · ppiss · psis

Frequently Asked Questions

Is swapping "piss" for "pus" ever safe?
No. They are said differently (/pɪs/ versus /pʌs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "piss" vs "pus" - which ranks higher?
"piss" is the more common of the two: it sits at frequency rank #5,443 in our English list, against #28,336 for "pus". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "piss" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #326,497 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "piss" and "pus" also get mixed up with nearby pairs, the highest-scored neighbour is "PPA vs pus". 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 #326,497 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