Which to use
“biff” and “bluff” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #36,889
- “biff” frequency rank
- #13,288
- “bluff” frequency rank
- 50177
- confusion score
Side-by-Side Comparison
| Feature | biff | bluff |
|---|---|---|
| Definition | A sudden, sharp blow or punch. | An act of bluffing; a false expression of the strength of one’s position in order to intimidate or deceive; braggadocio. |
Where the eye mixes biff and bluff
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between biff and bluff
A purely visual mix-up. biff (/bɪf/) and bluff (/blʌf/) 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 50177, derived from the frequency rank of both members and their visual similarity.
biff is recorded at frequency rank #36,889, classified as anoun, pronounced /bɪf/. bluff is at rank #13,288, tagged as anoun, pronounced /blʌf/.
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 50177, this pair ranks #176,652 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of biff vs bluff
Shared letters: bf. Private to "biff": i. Private to "bluff": lu.
"biff" · 4 letters · shape CVCC · "bluff" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "biff" for "bluff" ever safe?
Which is more common, "biff" or "bluff"?
What to do next
Eye-level mix-up between "biff" and "bluff" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "biff" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "bluff" - compare definitions side by side with the headword page. Word entry
- This pair ranks #176,652 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "biff" and "bluff" also get mixed up with nearby pairs, the highest-scored neighbour is "BFS vs biff". 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 #176,652 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.