Which to use
“boo” is an intj and “but” is a preposition - they look or sound alike but fill different roles in a sentence.
- #8,014
- “boo” frequency rank
- #25
- “but” frequency rank
- 8039
- confusion score
Side-by-Side Comparison
| Feature | boo | but |
|---|---|---|
| Definition | A loud exclamation intended to scare someone. Usually used when one has been hidden from the target, and then appears unexpectedly. | Apart from, except (for), excluding. |
Where the eye mixes boo and but
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses boo with but
These two trip readers on the page rather than in the ear: boo is /buː/ while but is /ˈbʌt/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (intj vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 8039, derived from the frequency rank of both members and their visual similarity.
boo is recorded at frequency rank #8,014, classified as anintj, pronounced /buː/. but is at rank #25, tagged as aprep, pronounced /ˈbʌt/.
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 8039, this pair ranks #504,388 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of boo vs but
Shared letters: b. Private to "boo": o. Private to "but": tu.
"boo" · 3 letters · shape CVV · "but" · 3 letters · shape CVC
Frequently Asked Questions
Can "boo" and "but" be used interchangeably?
Frequency check: "boo" vs "but" - which ranks higher?
What to do next
Eye-level mix-up between "boo" and "but" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "boo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "but" - compare definitions side by side with the headword page. Word entry
- This pair ranks #504,388 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "boo" and "but" also get mixed up with nearby pairs, the highest-scored neighbour is "BFS vs boo". Nearby pair
Confusion rank #504,388 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.